jesus christ nooooo poor table :(((((((((((((((((((((((((

@RotarySMP

2 жыл бұрын

I really think the poor Maho deserves better :(

@zoidbergVII

2 жыл бұрын

You will have to cast a new table next!

@RotarySMP

2 жыл бұрын

@@zoidbergVII That would be cool, but way beyond my equipment.

@DolezalPetr

2 жыл бұрын

@@zoidbergVII or try welding it and re-milling

@RotarySMP

2 жыл бұрын

@@DolezalPetr Come on, you have seen my welding "skills", you dont have to put the boot into the poor Maho. I'll probably leave it to remind me not to forget things I learned, but if I do repair it, it will be a cast iron plug and epoxy.

And as is tradition, those cutters don't ask questions. They just go for it. But at least, you have a very well made part. That's a win.

@RotarySMP

2 жыл бұрын

Yep, it is an uncaring machine.

Thanks for including all the mishaps, it makes the channel extra educational.

@RotarySMP

2 жыл бұрын

Thanks. Sometimes I wish I would retain my one painful learnings better!

I always find inspiration in your videos. We just received a new heat pump on a wooden pallet. I was going to throw away the pallet but after seeing this vid I realized I needed the scrap wood for new core boxes. Yep, you're always an inspiration.

@RotarySMP

2 жыл бұрын

Thanks for your kind feedback. Pallets are often much more interesting and exotic timber than we think. I picked up on that from Laura Kampf.

A gasp, a yelp, a wince, my hand over my mouth and legs crossed when I saw that crash. Ooof. But hey, end result looks great and you're still in one piece. Thanks for being able to show us! Really enjoyed seeing the casting retry and the process.

@RotarySMP

2 жыл бұрын

Thanks for your feedback. It was not a pleasant moment.

Ooooffff, that hurt to watch because I feel your pain. Turned out great in the end and you survived the landing.

@RotarySMP

2 жыл бұрын

Yeah, I was really disappointed at my performance. The Maho doesnt deserve that.

Have you thought about a fixture plate top for the mill? I run zero points on ours so we can load on sacrifical plates that have saved my but more than a few times. Aluminium with a few drilled and tapped holes

@RotarySMP

2 жыл бұрын

I think that is a good idea.

@forgeperformanceand4x4

2 жыл бұрын

@@RotarySMP just some 20mm thick alloy with a locating strip in it the strip you mill in so it drops into your t slot few bolts and bam. No more whoopsies a d infinite clamping options

@RotarySMP

2 жыл бұрын

@@forgeperformanceand4x4 ... and it would hide the aweful divet in the table :/

@Cyruscosmo

2 жыл бұрын

Just got me a new mill... My grandpa told me to learn by the mistakes of others... Cause you won't live long enough to make um all yourself... ;-) Where did I put that hunk of 25mm aluminium plate?

A spaceship through the void, lucky guy, you got a good one.

@RotarySMP

2 жыл бұрын

I thought that was cool when I showed her.

YEAAAAH! More casting!!! MOOORE!!!!!! MOOOOOOOOOORE!!!!!!!

@RotarySMP

2 жыл бұрын

Glad you got your fix :)

That casting and part came out SOOO GREAT!! When I worked at Buick, I watched raw castings turn into a running engine at the end of the line. Your cast iron looks just as good as the engine cast iron I used to see. I'm so sorry for your table. And it's so true about proficiency. Flying a plane is not like riding a bike. It's like an Olympic event. If you're not doing it constantly, you won't win. Nice work!!

@RotarySMP

2 жыл бұрын

Thanks Jasper, really hurt my pride this one, as I had learned that lesson and then forgotten it.

@jster1963

2 жыл бұрын

@@RotarySMP I bet! And me2;-)

That mistake with the table sure is a bummer but the casting looked great, it machined well and the part sure looks great! Even the engraving is the right side up! 😉 congrats!

@RotarySMP

2 жыл бұрын

I would rather have the engraving on it's head than that table scar, but couldnt choose :(

@josephlovell6951

2 жыл бұрын

So sorry mate... it broke my heart to see it can only imagine how you feel

@RotarySMP

2 жыл бұрын

Yep, it really was not a good moment.

i'm a machinist for a lot of years, I don't have any friends that do there own castings, I'm impressed with your ability to keep focused on every step of your projects, I like you Maho mill.

@RotarySMP

2 жыл бұрын

Thanks for watching and commenting. As you can tell, I am neither a machinist nor foundryman :)

@akfarmboy49

2 жыл бұрын

@@RotarySMP your casting turned out good. Your choices of carbide insert cutters is good. You might want to get a couple other sizes between tiny and large. I have been buying lots of them lately on eBay. When possible try using taller risers blocks above table. I have older CNC mill that has has one Retro fit before to long it might need a second retro fit upgrade.

@RotarySMP

2 жыл бұрын

@@akfarmboy49 That is a good idea. I have been thinking of getting a 40 or 50mmindexable mill to span that gap. Also taller risers would have helped. Thanks.

Casting videos are my favourite. What a brilliant result!

@RotarySMP

Жыл бұрын

Glad you like them!

Nice job. Neat voiceover cameo by Mrs Rotary. I'm a few days late watching this, so I hope you've stopped beating yourself up about the mill hiccup by now. Stuff happens. Glad to see you found time to give the name plate a bit of a rub for luck :)

@RotarySMP

2 жыл бұрын

Thanks Robert, Shame one moment of inattention took the polish of an otherwise nice result.

Ouch!!!, done that more than once, great job on the castings, machined surface looks great, very consistent material, swarf was uniform. Impressive work, in front, and behind the camera, Thanks for sharing. Regards John.

@RotarySMP

2 жыл бұрын

Thanks for your kind feedback.

That is a very nice casting! After the little table mark, i saw the chamfer tool go down and hit that threaded bar.. Not going to lie, that had me hold my breath

@RotarySMP

2 жыл бұрын

Yep, not my best perfromance.

Well on the one hand you customized your table a little bit, but on the other you got a great surface finish! 😂😯 But seriously thank you for taking us along, it is indeed doing the job twice to film and share it too. Aside: LPI developer is conveniently talc and acetone in a spray can, if your guy has any that has gone TX. Also aside: In the old old job an engineer made, for NDT techs, a definitive connection between currency and probability of detecting cracks, which was intriguing.

@RotarySMP

2 жыл бұрын

You are right! I think all professional jobs are like that.

My heart absolutely sank as I was hitting the stop button on my screen and the tool head was still lowering. I sure hope the distraction of capturing video for us didn’t contribute to that happening. Robots just have no feelings. Part came out super nice. The mixture of old and new is not lost. Hand planing wood to CNC planing iron you cast yourself. Other than the tool height mishap, hope you had fun.

@RotarySMP

2 жыл бұрын

Yeah, looking at that video I also dont understand it. I have my hand on the feed override, but misinterpreted what was going on. Super annoyed with myself.

I got nothing clever to write this week, so just congratulations on the solid casting!

@RotarySMP

2 жыл бұрын

Thank you very much!

Even factory cast iron parts have some inclusions, hence the bondo fills. I wouldn't worry too much about the gouge on the table. I would TIG fill it, machine it and then recreate the grooves. If done carefully, it should be impossible to tell it was damaged.

@RotarySMP

2 жыл бұрын

I will leave it for now, in case I forget what I learned again. If I do fix it, it will probably be a cast iron plug and epoxy.

@StanislavG.

2 жыл бұрын

@@RotarySMP braze fill it, so it'll look like a gold tooth :))

@RotarySMP

2 жыл бұрын

@@StanislavG. That would be aweful :/

@RJ99729

2 жыл бұрын

@@RotarySMP I was goin to suggest that too, my drill press table has quite a few brass filled woops in it. Kinda grows on ya. Kintsugi style

@RotarySMP

2 жыл бұрын

@@RJ99729 Too bling for me :)

Consider the gouge in the table a badge of honor. After all, it occurred while you were machining a part you cast for a cnc conversion of a Schaublin lathe that you've undertaken. It's a tangible reminder of your perseverance.

@RotarySMP

2 жыл бұрын

Thanks, that is a very positive spin on it.

Reminds me of my CNC training. No one told us that our cnc mill forgets it’s place in the program and it’s Z location if you pause the program. That end mill went into the aluminium work piece like a hot knife through butter at rapids feed, until it hit the vice and snapped.

@RotarySMP

2 жыл бұрын

Yeah, that is a horrible sinking feeling. Loosing position in the program on pause sounds like a pretty poor controller. LinuxCNC is fine with that, but loose tool offset on E-Stop.

@allnicksweretaken

2 жыл бұрын

@@RotarySMP yeah, it was both fascinating albeit horrifying to watch that demonstration of power in that brief timeframe. x) My buddy and I where both shocked and perplexed. Mmm, we didn’t have a state of the art machine to play with. It looked nice and all, but apparently it was as smart as a brick.

Excellent improvements on the casting, especially with the larger part. The result of your study and practice really shows. On a side note, seeing how diligently you are on making progress combined with the warming weather makes me want to get out in my own shop more. I mean, I still have that big lathe I need to finish rebuilding...

@RotarySMP

2 жыл бұрын

I find that the YT weekly posting probably makes me acheive more progress, even if it slows me down, if that makes sense.

love the split screen double cam thing👍

@RotarySMP

2 жыл бұрын

Thanks. It is a bit of extra effort in the edit, but makes it all a bit more interesting.

I'm really sorry about the Oops on the table. Being the first one always hurts more. You are right about the plug and JB Weld repair scheme as being the only solution. Maybe putting your logo in the plug could be a "feature". If nothing else, It's a good incentive for making a fixture plate, something I plan on for my VMC, especially as I get used to the quirks of the system and the pitfalls of the learning curve. Sorry, you get to be my inspiration for disaster avoidance.

@RotarySMP

2 жыл бұрын

Thanks. It was not the first scar in the table. The machine came from a tech school on the German border, and had two or three scars already, but this is certainly the worst. Yep, make the fixture plate straight away.

Machinist pebcak, luckily it wasn't worse and glad that Maho spindle survived. One reason I will never be comfortable being a CNC machinist, I have the attention span of a 2yr old and I'm not made of money. The cast iron part came out great, excellent work!

@RotarySMP

2 жыл бұрын

Yep, me too, and I dont use the Maho often enough in the last year due to the lathe conversion, to be good at it.

Sorry to remind you of it, but that really made my heart sink, as I've just read, will be a good reminder of what not to do, for all of us! Still binge watching the lathe playlists, I'm really enjoying the shaublin, have gotten here in a day or two from episode 1, your progress in video editing and cameramanning since the mini lathe is astounding! 👌 cheers, can't wait for some chips 😊

@RotarySMP

Жыл бұрын

Glad you are enjoying the series. I keep trying to learn and improve on the editing and camera craft. More to come in the new year

The casting process was looking so well thought out and exicuted that I was sure the castings were going to turn out unusable (they do that just to spite you for thinking you've got all bases covered). Glad to see you outsmarted the little blighters. :D The table crash is, as "Elektronaut" mentions so eloquently somewhere else in the comments, "A bummer". That bed looked in perfect condition before, so it's a shame.......... But there's always a plus side. The NEXT time you gouge the table it won't be as emotionally devastating, because it will have happened to an already scared surface (See, even an atomic mushroom cloud can have a silver lining. :D). It's similar to having a new car. The first time you find a stone chip on the bonnet (Hood) it's devastating, but 10 years later, when the car's covered in little scratches, scrapes, dents, and rust spots, you'll happily use your bumpers to punt shopping trollies (Carts) out of a parking space rather than getting out of the car to move them if it's raining. Owning "Pre disastered" things really takes the pressure off you trying not to damage them. :D

@RotarySMP

2 жыл бұрын

In this case it came out of a school, and already had two scars from then, but I still feel bad adding more. I know what you mean though, that is why I buy used guitars, so I am not the first to scratch them.

@Reman1975

2 жыл бұрын

@@RotarySMP Yes, and you don't feel quite so bad about smashing them over an amp at the end of a set in a Jack Daniel's and ketamine induced heavy metal rage. LOL ! It's odd how the mind works. One thought leads to another, then another, until you hit a very strong memory..... so I'm just going to detour on a bit of a tangent here. :D When my siblings and myself were kids my parents used to take us on caravan holidays. In the early days the caravans we could afford were horrendous old things that would have been held together with duct tape if the stuff had been readily available in the UK back then, and the holidays were about as enjoyable as a week living in damp infested squalor could be. Then dad got a promotion and a fairly weighty pay rise, so him and mum decided that it was time to buy a BRAND NEW caravan ! The next holiday we had was somehow even worse than usual. We needed to try and keep the dog off the seats (We didn't even try to do that at home !), shoes had to be removed before entering the AWNING, and dad would have flipped if we even thought about going into the caravan wearing them, and clothing had to be dusted off to prevent stray grains of sand getting into the carpets! Everything also had to be kept spotless, clean, and mark free. It was like being in the army, but without access to punch bags, or any other way to deal with the stress. The following year all us kids banded together and said we'd rather go stay with one of our aunts a few miles down the road than go on another caravan holiday like the last one. We all explained that it wasn't a holiday for any of us if we're too worried about damaging the caravan to have fun. We dug in our heals and no one went on holiday that year. A few months later the new caravan was sold, and when summer was over, another tatty old caravan turned up (When prices had dropped) ! Us kids helped mum make new seat cushions for it from some truly horrendous heavy gauge patterned fabric that she'd got cheap, and my elder brother helped dad recondition the brakes, and "Derust"/underseal the chassis. We had some of the best holidays ever in that one. It was already such a battered mess that dad wasn't afraid to near as damn it take it off roading to find interesting places to park up for the night. They had that caravan for around the next 10 years until us kids had grown up to the point where we were all working, so organising family holidays wasn't really a viable thing anymore, and when it was no longer needed it was sold to a young couple with a baby for a little more than it had originally cost.

@RotarySMP

2 жыл бұрын

@@Reman1975 That is a really cool story! We once drove around the NZ south island in some ancient Leyland van which my dad basically bolted a park bench into the back of (car safety was not a big thing in the 70's), with some heavy old canvas army tent. Sounds awful to me now, but we had a great time.

Once again, a great watch warts n all. All far above mt skill level, but I learn and enjoy as I watch. Thanks for sharing your hard work.

@RotarySMP

2 жыл бұрын

Thanks for the encouraging feedback. Not one of my best performances that. Bummer.

I'm so sorry... 😭😭😭 I totally feel that pain my friend... If that was this rough watching through my screen I can only imagine how that was for you...

@RotarySMP

2 жыл бұрын

Yeah, that was not one of my better performances. Poor Maho.

Casting went great. I loved the sound of the face mill cutting through it 🙂 Nasty accident on the milling table, but it will become a permanent reminder and you'll never make that mistake again - we learn a lot from painful mistakes. In the end it's a beautiful part, completely made from scratch and a lot of work 🙂

@RotarySMP

2 жыл бұрын

Thanks Jose, It was a lot of work. I switched to conventional milling with the big cutter to reducing the hammering, so It sounded better.

@JoseSilveira-newhandleforYT

2 жыл бұрын

@@RotarySMP Yep 🙂

Youre not the only one to do that, I have seen people just about destroy machines, spindles, fixtures and tables etc for the very same reason as what happened to you. Mistakes catch us all out eventually. Great video as usual

@RotarySMP

2 жыл бұрын

Especially disappointing as I programmed the post processor with a safe approach, and then forgot and deleted those lines. Lame!

Man I felt for you when that crash happened. As an Aussie I think that deserves a memorial day, and another public holiday of course :P On a serious note tho, consider a fixture plate. It'll cover up the evidence and give you a bit of sacrificial meat should this happen again.

@RotarySMP

2 жыл бұрын

Yep, good suggestion. Something I really need to get around to.

Nice job. I liked the split screen view, and I bet it made your life easier so you can concentrate on the work instead of the filming.

@RotarySMP

2 жыл бұрын

Thanks, generally the camera set up and start comes first, and then I cane generally ignore them while the machine does it's cuts. I sometimes bump into the camera stand, and you'll notice the wobble.

Beside the mishap you should be proud of that work! You made a professional part from start to finish! Thanks for taking us along for the ride. Keep up the good work!

@RotarySMP

2 жыл бұрын

Thanks for your positive feedback.

When that tool crashed I grimaced so hard that my face contorted into a fist. You have my sympathy! Excellent finished product though mate. Very professional fit and finish. Love the effort you go into in your videos, and also the fact that you show mistakes in all of their glory so we can learn as a group :D.

@RotarySMP

2 жыл бұрын

Thanks for the feedback. I really would have preferred less error sharing there :/

Beautiful part! Been watching a lot of your vids of late, you make some really cool stuff! The casting element is certainly a nice bonus that you don't see on many other machining channels.

@RotarySMP

2 жыл бұрын

Thanks for your support.

That crash was so hard to watch. My heart sank for you mate. I can only guess that you forgot to make that checklist I suggested last week? Work holding - Secure. Work holding Clearances - Verified. Rapids - Disabled. Tool Offset - Set. Safety squints -On. Mother on speed dial.

@RotarySMP

2 жыл бұрын

The lame thing is that I have that in the post programmer, to add the lines with the conditional stop to make a safe approach, but those were the lines I deleted.

@squelchstuff

2 жыл бұрын

@@RotarySMP Oh man. I can imagine just how that occurred, and it is so easily done. Filming it all for our benefit can't help much either. Task saturation is an insipid thing. The finished article did turn out to be great, and I hope your composure quickly returns. I did suddenly remember some Schweitzer Deutsch cuss words from some 30 years ago on your behalf.

@RotarySMP

2 жыл бұрын

@@squelchstuff I think the thing that hurts worst is that I implemented all Edge Precisions advice in the PP, and practiced it... and then forgot it all.

I just wanted to say a huge thank you for your epoxy granite advice a few months ago! At the time I hadn’t done a real casting yet, but you helped steer me away from zeeospheres and sent the Thomas Zietz (spelling?) calculator which worked perfectly for getting an initial formula. I ended up using 4 aggregate sizes and was able to quite easily do 11% epoxy by weight with very few voids. My lathe body casting was 250lbs and headstock is another ~80 so not huge but for me it was a big deal. Im flattening the inserts in my body casting to attach linear rails to for the main ways now. Its been a big process, 3 ft long and steel so it was hard to hand scrape. We talked months ago about using an angle grinder flap disk, and I was able to use that to rough in my ways to with about 2-3 thou. I am now (terrifyingly) using a cutting wheel to scrape the ways. If you’re interested I could definitely tryto make a quick video, but basically using the cutting blade making light backwards strokes it makes a very similar pattern to a hand scraper. Im using a surface plate and prussian blue and starting to get some very good contact area. Thanks again for all your help, have a great day!

@RotarySMP

2 жыл бұрын

I would definitely like to see a video on that project. Not just the grinder scraping, but also the castings and project design.

@robertsteinwandel6658

2 жыл бұрын

RotarySMP Heres the link, Ive never really made a video on youtube before,so this is basically me rambling for 7 minutes and might not make any sense lol. But it does hopefully show the basic plan Ive got? I didn’t have the thought to actually show all the parts I have ready for assembly unfortunately, but Ill try to make another video thats more complete and polished later. Anyways, if you get a chance to watch it let me know if you have any thoughts or critiques! Thanks, kzread.info/dash/bejne/jIOWlrSdmai2hcY.html

@RotarySMP

2 жыл бұрын

@@robertsteinwandel6658 Subbed!

really appreciate that you show this painfull failure to us. I enjoy casting of cast iron, not much people can do this. Casting aluminum or brass is quite often but cast iron is rare. Great work Mark. #3 fans

@RotarySMP

2 жыл бұрын

Thanks for your supportive feedback. I was really disappointed in myself for doing this. It is one think to make such a mistake, but to unlearn it and do it again is frustrating.

@johannesmajamaki2626

2 жыл бұрын

@@RotarySMP At least now there's a permanent reminder, right on your mill table what you'll benefit from it!

@RotarySMP

2 жыл бұрын

@@johannesmajamaki2626 Yeah lucky :/

Good to see we are all human!

@RotarySMP

2 жыл бұрын

No one would confuse my work with automation :)

I am so so sorry for your milling machine, when it happened to me i was sick for a week

@RotarySMP

2 жыл бұрын

Yeah, especially as it happened due to a forgotten lesson learned.

Oh my god. I just got to the part where the mill crashed. That's awful and things were going so well! Hugs from across the ocean!

@RotarySMP

2 жыл бұрын

Thanks Vince. I think the Maho is going to stop playing with me at this rate. It was a dumb mistake.

Oh, that wound in the table hurt. Physical pain in the stomach. Nice castings thou, and good job on making the part from scratch.

@RotarySMP

2 жыл бұрын

Thanks. I was pretty bummed about that divet. Especially as it is not the first time I learned that lesson.

Skilled metal haemorrhoidism with the stick welder :)

@RotarySMP

2 жыл бұрын

Considering this weld got jammed into the fires of hades, the uglieness was its smallest problem.

Ouch! That was a sad crash indeed. One thing you can do in LinuxCNC to provide a sanity check - set up your config to also unhome your axes when you e-stop or cycle abort. This (at least for me) serves as a reminder that the machine may NOT have all the coordinates "sane". Servo-based systems aren't as bad as steppers but they can still get out of sync sometimes. Setting up your CNC like that forces you to pause and think for at least as long as the homing cycle takes. If I were doing production work, that behavior would be annoying but as a hobbyist (when most parts are 1-offs) it's better to save the tooling/machine and waste a few seconds between cycles when I've cancelled for some non-emergency reason.

@RotarySMP

2 жыл бұрын

The Maho has linear encoder feedback. It cant get out of sync. That is one of the best things about such a set up. You dont need to home it except from a cold start. I had a decent work flow a year ago, but forgot it. I'll laminate up a little cheat sheet and hang it on the control, as the main points to prevent this are pretty simple when followed.

One of the good things with just iron cast is that it doesn’t make the horrible black dust like a graphite cast. Had todo a stone for the hot air of our ofen and that basically ruined the mill as the stuff is now everywhere.

@RotarySMP

2 жыл бұрын

It is pretty messy, but I like machining it.

I spit my coffee out when that tool hit the table. Following that I had uncontrollable anxiety about that hold down clamp stud on the right side of the part sticking up so high. I have definitely made similar tool height offset errors before. Cost me a Kurt moveable jaw. That casting came out pretty amazing. I've taken to using the anodized aluminum Saunders Machine Works fixture plates, one more layer between the tool and table and the quality is spot-on. Great video.

@RotarySMP

2 жыл бұрын

The fixture plate is a good idea.

Great video once again. Interesting stuff throughout. Cheers rotary

@RotarySMP

2 жыл бұрын

Thanks for watching and the feedback.

Part turned out beautifully!

@RotarySMP

2 жыл бұрын

I am pretty happy with that result.

I love the possibilities and openness of LinuxCnc. But this detail had the 432 better solved. It was so that even if you start a program from block x, the control reads the program from the beginning and takes over all zero offsets and tool offsets...

@RotarySMP

2 жыл бұрын

I rerendered the program in the CAM software to add the 3mm Z increment cuts, so it was not the same file. The dumb part was deleting all the stuff already machined, including the header for that tool change, where the G43 was. My logic was that the tool was already in, but I forgot that LinuxCNC erases G43 at a program stop.

a lot of work indeed. well done. great progress.

@RotarySMP

2 жыл бұрын

Thanks. It was good to make a mechanical part again.

Verry nice lamp you have on the Maho, when you want a flater result for the 020 endmill take for the 2e pass a smaller step over (1/4 of the endmill) nice video I cry when you make the hole in the Maho 😢😢

@RotarySMP

2 жыл бұрын

Me too. Thanks for the tip on the step over. I am still getting a feeling for milling, as you can tell :/

Really nice job. That was a big week.

@RotarySMP

2 жыл бұрын

Yeah, That casting session took me about 5H, as I normally start the furnace before moulding, but left it off for quiet. The machining also tool me a lot of hours. I am very slow at this stuff.

Very good video RotarySMP

@RotarySMP

2 жыл бұрын

Thanks for commenting as always.

😱...an apparently undamaged machine table has received its first hit. Bullseye. My feelings are with you, Mark! But that's how it happens, the machine is worked with, it's not a museum. Apart from that: great work, the parts look excellent!!!

@RotarySMP

2 жыл бұрын

It came from a school in southern germany, and had a couple of marks in it when I got it, and I added more. This is by far the worst though.

Ouch... I feel your pain when it hit the table 😢 Shit happens though, it's still perfectly functional

@RotarySMP

2 жыл бұрын

I was mostly annoyed that I had learned lessons and then forgotten them.

Great job all around! Mistakes are the lessons we recall the best. Great video work!

@RotarySMP

2 жыл бұрын

The painful think about that lesson is that I learned it last year, and forgot it again. Dumb.

Nice job with the castings. One has always be on the alert with CNC operations, there good till they stuff up.

@RotarySMP

2 жыл бұрын

Yes they are. Very uncaring devices.

Great episode!

@RotarySMP

2 жыл бұрын

Thanks for watching.

Wow sorry about your table! 😬😥 I definitely second the idea of making a big fixture plate. CNC is much better that way. 👍

@RotarySMP

2 жыл бұрын

I need to look into getting a plate.

@wizrom3046

2 жыл бұрын

@@RotarySMP ... it is a fun CNC task if you get the machine to CNC all the holes and threads on a grid. Would be a pain on a manual machine but hey now its a CNC. 😁

@RotarySMP

2 жыл бұрын

@@wizrom3046 Would be a good use of the Tapmatic.

@wizrom3046

2 жыл бұрын

@@RotarySMP tapmatic are great hey. 😁 But dont rule out threadmilling. If you have a 60 degree thread milling bit the CNC can just spiral cut the thread. You'll probably never tap another thread again.. (well at least on a CNC) 😎

Great video! (Except for the table bit 🙁.) I always look forward to watching these while enjoying my Sunday morning coffee here in the US. It's awesome to see someone doing cast iron parts in the home shop. Hopefully I will get there some day. I especially like how you showed the side-by-side of machining and tool path during engraving.

@RotarySMP

2 жыл бұрын

Thanks for the feedback. I kind of like doing the Multicam stuff as well. Bit of a PITA to edit, but makes the boring bits more interesting.

That was a great vid.

@RotarySMP

2 жыл бұрын

Thanks Anton, I wish the Maho didn't have to suffer so much for my art :/

So, so, so sorry about the ding to the machine table. Hate to say it in hindsight but this is why we NEVER work on any machine surface directly. We have plenty of sacrificial plates with evidence of dumb programming mistakes. The plates came out fantastic, great job on the castings, they will be your constant reminder of a job well done.

@RotarySMP

2 жыл бұрын

A fixture plate would be a good idea. Shame I didn't get one when I first got the mill.

@MRCNC1967

2 жыл бұрын

@@RotarySMP Well, you can always add a sub-plate to the work table, and with the added advantage of hiding past sins.

@RotarySMP

2 жыл бұрын

@@MRCNC1967 Might well do that.

Awesome work🤠

@RotarySMP

2 жыл бұрын

Thanks for the feedback.

@tom18181

2 жыл бұрын

@@RotarySMP No worries. Sorry to see that damage to your mill. You must have needed a quite one or two or three after that. Hope you can fix it somehow. Otherwise I guess it's a battle scar you will have as a reminder of what not to do

@RotarySMP

2 жыл бұрын

@@tom18181 It will probably remain as a battle scar. Bummer!

nice job!

@RotarySMP

2 жыл бұрын

Thanks for the feedback.

Awesome work! 👍 very impressed how the quality of that motor mount casting turned out. I hurts to watch that endmill digging into the table though!

@RotarySMP

2 жыл бұрын

It sure did hurt, especially my pride. Some consolation that the result was good.

Nice job

@RotarySMP

2 жыл бұрын

Thanks for commenting.

WONDERFULL JOB, WELL DONE. PUT A PLASTER ON THE MILL TABLE IT MIGHT HEAL UP . REGARDS RICHARD.

@RotarySMP

2 жыл бұрын

Thanks for the positive feedback. Bruised ego on this one that is for sure.

Man, I am still pis*ed off at the blunder and it's not even my mill !! So easy to do especially when you don't have your hads on the wheels. You have my sympathy. Once I have calmed down I'm off to the shed to do some milling & boring on the countershaft cradle from the lathe in an unavoidabley janky setup. Maybe this video will increase my vigilance.

@RotarySMP

2 жыл бұрын

I hope my error helped. I sure hope this time I have finally internalised that lesson I learned a year ago.

@Andrew_Fernie

2 жыл бұрын

@@RotarySMP You have an everlasting reminder. My janky setup worked out ok so Maybe you did help 😃

@RotarySMP

2 жыл бұрын

@@Andrew_Fernie Glad to hear that. Good one.

That crash hurt my soul!

@RotarySMP

2 жыл бұрын

Mine as well. Thanks for your comment, it helps train the algorythm.

Man that crash hurt me watching it. Every time I operate my CNC router this is the part that terrifies me.

@RotarySMP

2 жыл бұрын

Yeah, that was not one of my better performances.

Entertaining as usual. This inspires me to get the little toy 3020 table mill working. :-)

@RotarySMP

2 жыл бұрын

Go for it!

Thank you for sharing this

@RotarySMP

2 жыл бұрын

You bet

Now you have to cast a milling table haha

@RotarySMP

2 жыл бұрын

I wish :)

It must be so satisfying to make a part from scratch! Great job!

@RotarySMP

2 жыл бұрын

Yeah, I am happy at how the part turned out.

r.i.p. dear table

@RotarySMP

2 жыл бұрын

It is still there, glaring at me.

I watched a vid from Floweringelbow showing a circular dross trap at the end of his side sprew run (?) which catches the dross in a centrifugal trap before pouring into the mold cavity. No dross filters needed.

@RotarySMP

2 жыл бұрын

Thanks, I have seen those ued before, but have so far been too lazy to try one :)

For that center feature, you could make a leave in plug with sand and water glass (sodium silicate) that hardened with carbon dioxide. Myfordboy has a couple great videos on those. Good luck.

@RotarySMP

2 жыл бұрын

I considered making a core (which is what it is called), but it is not critical that this hole is weel formed and this is simpler. When I make cores, I dent to make baked, sugar bound ones.

@simple_fred

2 жыл бұрын

@@RotarySMP Core, yes, thank you.

Aaaaargh! Pow, right in the kisser!

@RotarySMP

2 жыл бұрын

Yep. Bummer.

I didn't read all the comments so this may have been mentioned in another. When running a tool in to a part after changing the program or setting the offset. Always push feed hold when it approaches the work piece (The machine could also be in single block as well to the first clearance move). Then look at the distance to go display on the control. If there is enough room for the tool to go there and not a long distance in the Z minus than continue with cycle start. This is a very simple way to avoid this kind of crash in the very beginning of a tools cycle. Don't just push cycle start and hope you can stop it with the emergency stop in time.

@RotarySMP

2 жыл бұрын

The really worst part about this crash, was that you taught me this last year. I had practiced what you taught me and had it pretty well down (I thought). It really sucks to find out I forgot what you took the time to teach. Sorry about that. I set up the PP with a G43 on tool change, an M1 conditional stop 50mm above the work to test with a 25-50-75 block and had practice with the feedrate turned right down approaching, and looking for DTG. However, in the year of working on the Schaublin and barely using the Maho, I had forgotten that LinuxCNC cancels G43 when you exit a program, and also gotten out of the practice of checking the DTG, or looking at the tool offset value. When I modified the CAM to add the Z levels and regenerated the g code program, I manually deleted everything I'd already done, and since the tool was already in the spindle, deleted the tool change block. I remember when deleting, having that nagging voice saying maybe I should leave that in... That is how I lost tool offset, and also lost my safe approach conditional stop. Since I will never be doing this on a daily basis, I think I'll laminate a checklist to remind me of the work flow before starting. Just seeing DTG in the comments, reminded me of how I practiced that last year. If you stop a program half way through, edit and repost it, what is your procedure for removing what is already done?

@EdgePrecision

2 жыл бұрын

@@RotarySMP Aren't you a aircraft guy. A check list sounds good. I usually just put a GOTO(N sequence number (If your control will do this). Just the number no N no space.) statement in the code right after my G43 H and D to Z clearance move. But you need a N sequence number in the code (It will give a alarm without it). also make sure there is a XY position (If not the same) on that line. I would suggest you experiment with this before doing it in a real setup. But if you delete the bulk of the code (I do that as well). Do not leave out the G43 line. All controls (Except the mazatrol. You don't even need a G43 on it) reset this value. If you reset the control. It doesn't hurt to reread the statement in any case.

@RambozoClown

2 жыл бұрын

@@RotarySMP If I stop a program, tweak it and rerun it, I always make my starts at the tool changes. This is mostly because I learned on old goofy controls where the tool offsets were in the program not the control. Sure that would often mean cutting air for a while, but that's better than cutting the machine. My ah ha moment wasn't the tool going into the table, but having a 1/2 endmill rapid into clamp and being snapped off and winged across the shop, because I tried to save time by skipping a chunk of code that had been run.

@RotarySMP

2 жыл бұрын

@@RambozoClown Thanks. That makes sense.

@RotarySMP

2 жыл бұрын

@@EdgePrecision Thanks. I did check to make sure I had good X and Y values in the start of the code I left. I checked but LinuxCNC does not support GoTo, which doesn't really surprise me. Goto is generally hated in the coding community.

Sorry you messed up the table section. I know that had to be heart-aching. I know because I drilled into my floor model drill press table and I was ill for a while. So maybe you can repair it with machining some type insert to fix that area. IDK. However the casting and machining for the actual part was amazing to see. Thumbs Up!

@RotarySMP

Жыл бұрын

Thanks Gary. Yeah, I was was really PO that I did that. I haven't repaired it yet. Maybe I will machine a plug for it at some point.

Awesome

@RotarySMP

2 жыл бұрын

Thanks for the feedback.

the best casting sand is hooker sand from Australia. It has microscopic hooks that help hold the molded sand together. My factory bought it, a few truckloads a week, for aluminum casting.

@Raeilgunne

2 жыл бұрын

after I typed that up, apparently only "large multinational auto maker" calls it that. We used it for decades and only recently started using a black sand and waterglass mix

@RotarySMP

2 жыл бұрын

I have never used a naturally bonded sand, so I have no comparison, unfortunately. I have used petrobond once. That stuff feels like playdough :)

@Raeilgunne

2 жыл бұрын

@@RotarySMP we used it to make cores, rather than molds. Have a hundred or so core making machines making cores for cylinder heads.

The casting doesn't look like it needs any filling, Great,,,,,,,,,,,,, But, your mill table does, ouch,,, But when your done filling your mill table let me borrow that filller my vise needs a few repairs,, LOL man that hurts to see..... LOved the video

@RotarySMP

2 жыл бұрын

Thanks for the support. Painful lesson again.

Man I hate seeing that ...but its part of this type of work human error.....these motor mounting plates have become really expensive really quickly. Also love the casting process!!!!! Great job ...on that part

@RotarySMP

2 жыл бұрын

Thanks. The plate was a lot of (unnecessary)Ä work, but I like the result.

Well done mate. Making parts is hard. I do this for a living, and I still crash(recently just indexed the turret of my 14inch lathe into the chuck). I can tell how worn out from it you are in the outro, but keep going! For sure something on your control isn’t right though, you should be able to stop this stuff in time. In my experience, 99% of crashes are on linking moves, so entry should (in my experience), be 1percent rapid, 10% feed override. Don’t worry about single block. Then just swap between 0% and 10% feed to inch into the cut.

@RotarySMP

2 жыл бұрын

I learned this lesson last year with a crash, and Edge Precision did a video to teach me how to avoid it. Based on his advice, I edited my PP to do an M1 conditional stop 50mm above the part, dial back the feed rate, watch the DTG etc. Problem here was that I added the Z increment cuts in CAM and outputted a new file, which I manually edited to delete all the stuff already machined. As the tool was already right, I deleted the tool change block which would have added the G43, and also deleted the safe approach block. I was on the feedrate overide, and had it dialed right back, but had lost the practive of checking DTG, in the year I barely used the Maho. Idiotic.

@spikeypineapple552

2 жыл бұрын

@@RotarySMP for what it's worth, I really love watching these, thankyou for making them. They're a really nice mix of technical and machining

great choice of music!

@RotarySMP

2 жыл бұрын

Thanks for the feedback.

Pilot checklists usually evolve from "oops" occurances. Maybe a modification to your post processor that pops up a checklist reminder after program interruption... "Hey Bozo! Don't forget..."

@RotarySMP

2 жыл бұрын

The problem here was me deleting stuff I programmed my PP to put in there. Dumb as!

Wow fantastic improvement in the casting well done 😀 I was worried about the tabs being used feeders as they spilt the flow which can be bad for ally maybe not so much for cast iron? Think it is time to make or buy a fixture plate for the Maho sometimes called a pallet... will hide the apprentice mark as well as protect the bed. Don’t beat yourself up about it, the only people who don’t make mistakes are the ones who don’t do anything at all.... Look forward to seeing the next one machined hopefully it is good enough. 😀

@RotarySMP

2 жыл бұрын

Thanks. I am thinking that a fixture plate would be a good idea. I only feed through one tab.

You can get some cheap metal ash filter barrel thing that goes before the shop vac, I got a cheap one and it came with metal lined hose, and metal attachments so vacuuming hot chips is no problem.

@RotarySMP

2 жыл бұрын

Good idea.

O god that hurt, every nerve in my body clenched then farted ! The horror! I can't unsee it..... edit: had to go get a drink, a stiff one. Your table...now the grieving starts. Thanks for showing it, hard.

@RotarySMP

2 жыл бұрын

The problem with the seven stages of grief is that denial is ineffective when I was the only person involved.

@m3chanist

2 жыл бұрын

@@RotarySMP Aye...you can run but you cannot hide, from yourself. If it's any consolation, I dropped my rotary table last week, slipped from my grasp only the concrete slab, missing my feet however so there is that...I'm still grieving.

@RotarySMP

2 жыл бұрын

@@m3chanist Glad you missed your feet.

very nice

@RotarySMP

2 жыл бұрын

Thanks

@MakarovFox

2 жыл бұрын

@@RotarySMP my pleasure

sorry you messed up your table.. i always use a fixture plate just in case ! nice job Joe

@RotarySMP

2 жыл бұрын

Sounds like a fixture plate is a good idea.

slowly but surely.

@RotarySMP

2 жыл бұрын

Yep. Bit of progress.

Sorry for your damaged table. Seeing it happen hurts, guess I share part of your pain ;-). Knowing many others do as well does it bring some relief? Thanks for sharing your experiences

@RotarySMP

2 жыл бұрын

Thanks for your support. The Maho thanks you as well :)

Thanks👌👌

@RotarySMP

2 жыл бұрын

Welcome 😊

26:40 bendy bendy, done that on a manual mill once, funny what you can do when your focused on the cutter

@RotarySMP

2 жыл бұрын

Yeah, that was also dumb. Should have used a shorter one.

I felt for the table. Ouch!

@RotarySMP

2 жыл бұрын

Me too.

Thanks for the added info... man, I am sorry about the table...

@RotarySMP

2 жыл бұрын

You and me both!