SERIES LINKS: PART 1: kzread.info/dash/bejne/ga15r5myeZitZJs.html PART 3: kzread.info/dash/bejne/fmacydeofr27odo.html

Hey, I know I'm a bit late finding this video, but if you end up doing something like this again, turning them between centers would be a good option, assuming you have a dead center you can swap out for the chuck, driver, and apropriately sized lathe dog. Go through the whole bucket and drill centers on both ends, then swap to the dead center. Once you have it between centers, you don't have to worry about the chuck slipping.

Made me happy it seemed to help you Richard. I hope you get a lot of young apprentice watching. It was shown to me by a master Turner. Thanks for the shoot out Richard. 👍👍👍

@MakinSumthinFromNuthin

5 жыл бұрын

You saved me David, I woulda never met my deadline without you sharing your knowledge (and me remembering it)...Thank You!!! 🍺🍺

@MakinSumthinFromNuthin

5 жыл бұрын

I do need a proper tool for plunging like that David, maybe you can do a video on what is proper for such a cut if you ever find the time

@StephenMortimer

5 жыл бұрын

Hey MrUserBrit... true we are gun toting Yanks ... but we still SHOUT before we SHOOT !!

Just turn a small shoulder on your workpeice on the chuck end. So that would be your first project operation. No messing or guessing and adios bad vibrations as when you start your cut by plunging near the chuck. As you say your machine lacks rigidity. One thing not many people realise, is that small lathes such as yours are not designed for carbide tooling. HSS is the most versatile cutting tool to use for small lathe work. A higher Cobalt grade content HSS cutting tool is definitely appropriate for 4140 in my opinion. Coolant is a must in this situation.

@MakinSumthinFromNuthin

5 жыл бұрын

I had the waste stock on the end, that woulda been a great idea. Thanks for that. I need to really go thru my HSS and see what I havee, and yes....I need to set up coolant on the lathe.

@wayneflint8077

5 жыл бұрын

It's a tough job for a small lathe. Make a packing piece behind the job and the chuck to take up the thrust of the cut.

Looks good! You answered my question on using the diamond plate at the end of the video. Chris

@MakinSumthinFromNuthin

5 жыл бұрын

works in a pinch Chris

Great , Dave is a good guy ! ..Hate those birds nests man..

I've had challenges with chip control on alloy bar too, and it's aggravating when you get a rat's nest flung at you when it hooks on the chuck jaw. Glad you got things in order to meet your deadline.

@MakinSumthinFromNuthin

5 жыл бұрын

me too! :) Most frustrating job to date but loved it!

I notice that cutting toward the headstock also radically changes the angle of attack on the cut. Great mirror finish.

@MakinSumthinFromNuthin

5 жыл бұрын

The 4140 leave a great surface finish, I like working with it

That's turning out to be a nice cut.

@MakinSumthinFromNuthin

5 жыл бұрын

First time turning 4140, challenge for sure with this small lathe. Machines nice :)

Getting the chip breakers to engage is a real problem for me as well. I only seem to get them to work with crazy feed rates. I like the reverse turning approach. I have see Tom Lipton do that with facing operations (inside out). I also like the modification to the carbide geometry. You lose the coating but improve the cutting action. Interesting video.

@MakinSumthinFromNuthin

5 жыл бұрын

The highest feed rate on the Atlas is just .008/rev. The reverse turning did work well but plunging like that wasnt the best way to go about it, should have used a parting tool but was under a time crunch. Each additional operation added hours to production time

First thing I did for my lathe was a chuck stop for this exact reason.

@MakinSumthinFromNuthin

4 жыл бұрын

Good choice!!! 😊

I have used that method before as well, however I like advancing the tool while the feed is on and then cleaning the taper on the return to the left side. You make me clench my teeth when you move the insert in. don't you love deadlines! Cheers, enjoyed the project.

@MakinSumthinFromNuthin

5 жыл бұрын

That is a really good idea, thanks for sharing that! I wasnt exactly pleased with some techniques I used here in this series, just documenting my struggle with this rush order

WOW, what a job. Looks like you fingers took a beating Rich. Glad you were able to find a better way of turning the diameter. If you don't mind, I will make a mental note of that as to gain from your hard earned experience .... uh and pain. :-) Thanks for sharing buddy! Joe

@MakinSumthinFromNuthin

5 жыл бұрын

Hands and arms did take a beating Joe, part 3 out shortly.

if it's not a finish pass you can flip the power feed off for a second to break the chip

@MakinSumthinFromNuthin

5 жыл бұрын

True, I have used that technique before....my lathe wasnt powerful enough to manage the chips properly

Hi Richard. Not heard from you for a while now. Trusting you're ok at this time. Stay well buddy.

If your headstock will allow it, cut 20 pieces of stock , and hold on to one side, cut to almost middle to diameter, then end for end ( flip it) Machine second pin. Saw cut at centre , face and done.

@MakinSumthinFromNuthin

5 жыл бұрын

Good idea, thx for sharing 👍🏼

put a block behind it in the chuck

@MakinSumthinFromNuthin

5 жыл бұрын

In hindsight, a number of things I shoulda done differently, good idea Dan

If you want to do the left handed cutting on a lathe that doesn't like plunging, you could try a cutting a groove with a parting blade to a rough diameter slightly larger than the finish size you need. This would take more time initially, but would provide a place for the tool nose to start when turning.

@MakinSumthinFromNuthin

5 жыл бұрын

Yes, thats the plan next time I do them.. Great suggestion

Hi ! I have seen push back far too often so I made a stop of sorts that fits between the jaws on all 6 sides and covers the throat hole as well. That way it solves a lot of issues. Magnetic ones are available as well. ABOM79 has shown them on his channel. X-drilling after sizing is another thing. Carbide hates an interrupted cut. Amazing stuff but oddly fragile in some aspects. Try rocking the apron in and out while plunging as well. Just a bit and that will stop the chatter. 4140 can be described as trying to cut an inner tube with a 2x4 eh, LOL. The finished bucket full will look amazing my friend.

@MakinSumthinFromNuthin

5 жыл бұрын

I am going to make something for my chuck to handle this situation down the road. Thanks for all the great advice and comments Dean. This wasnt my finest work but got through it.

@TomokosEnterprize

5 жыл бұрын

Makin Sumthin From Nuthin I jut took 6 pcs of 5/16 x 1 1/2 flat bar and clamped them to the sides of the jaws with a shim on ea jaw. Weld them where they meet at the center over the throat. It has a restriction to what can be chucked but generally smaller pieces don't give nearly as much grief eh. That was on a 16" chuck.

@MakinSumthinFromNuthin

5 жыл бұрын

Thanks for sharing Dean

I feel like this is a gold opportunity to make Sumfin' from that nuthin' bunch of steel wool lol

@MakinSumthinFromNuthin

5 жыл бұрын

Damascus ? 🤔

@dimitar4y

5 жыл бұрын

Makin Sumthin From Nuthin , I dunno man, you're the expert of making something from nothing :P let your imagination run wild.

What you could have done here Richard is is use a parting tool to your near depth then use this tool. Even better this tool mirror image ( left hand .. right hand )to cut towards the tailstock. The tool you used had a cutting length of 3 times at least and the motor didn't bog down. Instead of a 10 thou cut you could've taken a 40 tho cut... less cuts. I hope you understand what I mean. 🤔

@MakinSumthinFromNuthin

5 жыл бұрын

I didnt even think about the parting tool David. Was in such a rush I wasnt thinking clearly, but it all worked out in the end

Looks like your through hole is smaller than the pin you are turning. If so, make up a small spacer to put behind the part in the chuck so that the pin can't move backwards. Thanks for taking us through the hole process.

@MakinSumthinFromNuthin

5 жыл бұрын

Thanks for the suggestion for the future and for watching!

Doesn’t like the plunge cut, could try moving the carriage back and forth to wiggle it in. How’s the final dimension that you changed in video 1 I hope they didn’t want the larger size:). Cheers Peter

@MakinSumthinFromNuthin

5 жыл бұрын

Another great suggestion, thanks Peter. Customer was fine with the specs.

Hey buddy, Only suggestions, but if you can move back and forth in the Z axis (carriage right & left) as your plunging it may be a little easier on you and the tool, similar to how a a cnc ramps an endmill into material. Also I couldn't hear the machine very well but if she'll suffer any more feed it will really help to break the chip, you could probably knock the SFM down a lil, chip looked like it was moving past blue into no color a couple times. This really makes me appreciate my big old Leblond, she's damn near worn slap out and takes up half the shop but with 10 ponies she can hog like nobody's business. Thanks for vid!

@MakinSumthinFromNuthin

5 жыл бұрын

Suggestions always welcome Steve, I needed the RPM speed to meet the deadline. The problems I encountered had me wayyyy behind schedule

@Steve_Just_Steve

5 жыл бұрын

Makin Sumthin From Nuthin Thanks for the reply. I always choose feed over RPM to save time if the powers there. Just remember when your having trouble breaking the chip the answers always more feed. lol at least for me. A four jaw will fix that pushing back in the chuck crap unless material is chromed.

@MakinSumthinFromNuthin

5 жыл бұрын

I had the feed rate maxed out, highest is just .008/rev on this Atlas. If I had to dial in 40 pieces in a 4 jaw I woulda never made the deadline, but you are right....MUCH more holding power than a scroll chuck

@Steve_Just_Steve

5 жыл бұрын

Makin Sumthin From Nuthin- Sure you would have buddy cause you wouldn't have all those problems the day before. JK ; )

@MakinSumthinFromNuthin

5 жыл бұрын

LOL :)

Yep alloy steel is tough stuff, besides not drilling the pin hole, you could have maybe roughed out the part in steps. Starting at the end and cutting the diameter down perhaps 1 or 2 inches you might have been able to take a more aggressive DOC that way for chip control. Another thing is because of the limitations of our smaller lathes, try to use inserts whose chip breakers are designed for finishing. The chip breakers are narrower and will help in chip control

@MakinSumthinFromNuthin

5 жыл бұрын

Good suggestion James. I took the job in on a Friday evening and to make delivery Monday AM so had to work with what I had

@JamesDedmon

5 жыл бұрын

I understand completely

Hi just a question....instead of plunging the bit in at the shoulder.....will using your parting tool to cut a grove to depth not work and the cutting like you did?. Your thoughts please I have a similar job coming up.

@MakinSumthinFromNuthin

5 жыл бұрын

Yes....by all means do that!! I should have but was in too much of a hurry for tool & speed changes since I had 40 parts on a deadline

@sbwebster

5 жыл бұрын

Makin Sumthin From Nuthin yea I feel for my Lathe and sometimes it hampers my production.........

@MakinSumthinFromNuthin

5 жыл бұрын

We buy the biggest lathe we can afford & sometimes the job requires more than the machine can handle.....and the operator pays the price :)

one trick we used to.do clamp a short piece of old hacksaw blade on top of turning tool or griend up tool as if you were making a box tool for a screw machine so chip relief guides chip

@MakinSumthinFromNuthin

5 жыл бұрын

Good idea, I couldnt get the 4140 to break a chip that weekend for anything! LOL

If you were to melt down all the shavings could you cast new 4140 parts with them?

@MakinSumthinFromNuthin

5 жыл бұрын

Not with my equipment 😊

Would it have been easier to start by using a cutoff tool to drop in a groove? When you dwell with the bit at the start of the cut, it sets my teeth on edge. My lathe is not a big as yours, and not as rigid... so that sound means I'm getting chatter or killing the edge on the HSS. Man, good info. I'm glad you got on those chips with the pliers. Meat doesn't stand up as well!!!

@MakinSumthinFromNuthin

5 жыл бұрын

YES, it would have Strx, I just didnt have my thinking cap on at the time. I made quite a few errors in good techniques in this series, learn from my mistakes and be safe

Hey Richard have you watched the video that sunnppa made of the trepanning tool I made him? He had a great result.

@rodneygowland551

5 жыл бұрын

Hi Richard just a thought, maybe you could have turned them between centres. The dead centre in the chuck would need a step to stop it from being pushed into the chuck. But it would be easy enough to turn up. Rod

@StephenMortimer

5 жыл бұрын

Rodney Gowland Hah... youtube is getting real communities ... I just saw Sunnppa's video (just about quit when he sold the BEDFORD)

@MakinSumthinFromNuthin

5 жыл бұрын

Good to see you Steve

@MakinSumthinFromNuthin

5 жыл бұрын

That woulda worked really well, thanks Rodney

@MakinSumthinFromNuthin

5 жыл бұрын

Not yet David, but will today, thanks

Why can't you put a stop behind the work on the chuck side.

@MakinSumthinFromNuthin

5 жыл бұрын

In hindsight I should have :)

hate to see such a pretty finish... especially when you know they are going to be banged into a hole with a sledge.

@MakinSumthinFromNuthin

5 жыл бұрын

Right! :)

That's recyclable! Lol

@MakinSumthinFromNuthin

5 жыл бұрын

LOL! Yes, it is

@rodneysrepurposingrecyclin3821

5 жыл бұрын

@@MakinSumthinFromNuthin i hope that's your recycle bin? Sorry i worked at the landfill for a while when I was younger, people literally throw away millions daily.

@MakinSumthinFromNuthin

5 жыл бұрын

Yep, recycle bin 😊

@rodneysrepurposingrecyclin3821

5 жыл бұрын

@@MakinSumthinFromNuthin whew....... Lol