DAY 7,8,9? That seems very implausible! I'm pretty sure it's DAY 7,8,_ .. since seven ate nine :p

@therefridjerator

9 ай бұрын

ha.... ha.... ha..........

@RappelzWikiaPolska

9 ай бұрын

omg dad go back to basment *edit change doda to = dad as it meant to be

@JesseBadut14

9 ай бұрын

.....

@NinjaOnANinja

9 ай бұрын

Why didn't the tp cross the street? Answer 👇 It got stuck in a crack.

@bergamt

9 ай бұрын

Everyone gets subtracted sooner or later.

The insert moved during facing... Also when you tighten the chuck, you are suppose to use the brake to lock the rotation of the lathe. You can press fit a sleeve in the center hole to get material back and re-turn the center. Also increase the shaft size to 30mm means you need to use a bigger taper bushing, which means you can re-turn the center again.

@Nevir202

9 ай бұрын

Or just re-weld and re-turn the center. I mean if he did it once, why not again?

@durandle9226

9 ай бұрын

@@Nevir202 more a thing of it is good enough as is for the current prototype and the next iteration should have the popper shaft size anyway as Martian now knows the importance of having a strong enough shaft for the flywheel

@maesto

9 ай бұрын

As far as I know our meuser lathe doesn't have a brake. Do you have a timestamp for me for the insert moving? Then I can check the holder. The sleeve is a good idea though we don't have a press set up here.

@Nevir202

9 ай бұрын

@@durandle9226 Sure, good enough is good enough here. I was just saying I didn't see a need to introduce a new process here, rather than just repeat something he has already done.

@thenextstepp

9 ай бұрын

​@@maesto13:03 shortly after that is when it moved.

When I worked in manufacturing, on the floor we could tell when a drawing or product was designed by an engineer who had never touched a machine in their life. "What do you mean I can't have that hole there? I designed it so you would just need to use a 300mm long 3mm diameter drill bit. What's the problem with that?" The fact that Martin is gaining experience on the machines SPECIFICALLY to become a better engineer is a very valuable and commendable thing. Great job!

@gary_rumain_you_peons

9 ай бұрын

Ha ha! You'd be lucky to get a 300mm long 3mm diameter hole in wood, let alone metal.

@skylerlehmkuhl135

9 ай бұрын

@@gary_rumain_you_peons Might be doable in metal via EDM - can't think of a good way to do it in wood, though.

@Allan-mf1he

9 ай бұрын

@@skylerlehmkuhl135 Was thinking the same. U sing spark erosion will work but even then you will have to have a custom machine built. Imagine quoting $100K for one of those holes :).

@joeppppppppp

7 ай бұрын

waterjet or laser @@skylerlehmkuhl135

Something I wanted to note on the balancing of the flywheel: I was there in person at the meetup, and when the wheel was spinning at full speed, the frame was basically not vibrating at all (I touched it), which means it is very rigid. So while balancing is certainly important, in this particular case, as Martin said, if is fine for now.

@771racing

9 ай бұрын

Yeah, I was just going to point out that most of what he's doing right now is only impacting aesthetics, not actual flywheel operation. The main thing to do is make sure the flywheel is statically balanced, at that point any wobble is just a visual distraction.

@barrelroller8650

9 ай бұрын

I suspect the wobbling is due to the braking systems, which exert significant lateral force on the flywheel, potentially causing the shaft to bend. At the start of the video, he pointed out about a 1cm offset in the wheel. While the wheel might not be perfectly round or flat, such a substantial offset can't be attributed to just a minor imperfection. By the end of the video, he observed that the shaft had bent, even though it appeared straight in previous videos.

@LugnutsK

9 ай бұрын

@@barrelroller8650the wobbling was there before the brake was added, but it’s definitely not helping

You don't need to have a perfect geometry for the flywheel, what you need is a perfect balance that can be achieved by adding small weights or drilling holes.

@cliveso

9 ай бұрын

This. I think sideways wobble doesn't even generate vibrations provided that the wheel is balanced. If it doesn't generate vibrations, it doesn't matter.

@JulesStoop

9 ай бұрын

And getting it balanced is actually made harder by the introduction of the rather irregular welds.

@igorcruzz

9 ай бұрын

All the thoughts I had about this video are above XD

@gerrardhickson9471

9 ай бұрын

@@JulesStoop Not so much - if you can balance a cast flywheel, a few odd blobs of weld won't hurt.

@gerrardhickson9471

9 ай бұрын

Agree 100% - unless you've seen it yourself, you wouldn't believe the different between a flywheel that is unbalanced (even if it feels ok) versus a flywheel that has been balanced.

The problen with run out is common to taper bushes - you need to use a dial gauge while tightening the four locking screws to ensure that it clamps square to the flywheel surfaces - very easy to sort out.

@MrAshadams

9 ай бұрын

Great tip! Certainly makes sense, works like a 4 jaw chuck. Do you also have to match torques on the 4 screws?

@christhesnaildriver

9 ай бұрын

Yes this 100%. At 23:36 I can clearly see the taper mount Flange itself oscillating quite a bit in the same direction as the flywheel. Judging by how much it was moving, I wouldn't be surprised if this was the main cause of the run out.

@leikom2010

9 ай бұрын

I think that's the case too. I couldn't see the shaft moving at all compared to the flywheel. My first guess was that the clamps are not square to the shaft and flywheel...

@TypIch

9 ай бұрын

This is true and really important.

@BensMiniToons

9 ай бұрын

@@christhesnaildriver Shh! your ruining the illusion of drama. we all know its fake. its about the journey not the destination. I've know for 10 years. I love it. Its so funny. It's British humor.

Prototypes are for learning, not for perfection. Did you learn? Then this was a HUGE success! Keep up the great work! We are all rooting for you and the world tour!

Martin, I didn’t see if you put a chamfer on your weld mating surfaces, if you are welding flat edges and turning down,you could potentially be removing all your welds. Also adding welds to your cutouts will change the balance. Best of luck, looking forward to all your vids

@xander1052

9 ай бұрын

Exactly what I was thinking about here.

@somewhere-else

9 ай бұрын

you can literally see some cracking near the end of the video

@djb5320

9 ай бұрын

prototype

@JnManuelAG

7 ай бұрын

I was thinking the same

For heavens sake. The flywheel wobbled relative to the axis of rotation. That is the shaft. If you wish to turn a flywheel to remove material to correct run out, may I suggest you turn the flywheel on the shaft (or suitable substitute)?

@icestormfr

9 ай бұрын

----/|\---- | THIS | ------------ a) As someone working in (ultra) high precision motion systems (including rotation stages with urad wobble and sub-um eccentricity) this one of the first things that came to my mind. b) As this is welded from 4 different unevenly formed plates, the effective "moment of inertia" will probably have some static and dynamic imbalance (see also: tire balancing)

@WhatAboutTheBee

9 ай бұрын

@@icestormfr Martin's brake is axial (parallel to shaft, against the side of the flywheel). The brake should be radial (perpendicular to shaft, against the circumference of the flywheel) Applying repeated axial force is likely to create wobble in the flywheel

For a prototype, the improvements are tremendous. Wonderful learning, Martin! As someone who was trained in turning in his school it reminded me of my own inexperience going into the class. Difference for you is that you do have a worthwhile outcome. I'd consider this a great success! Perfect is the enemy of Good (and vice versa), but Progress beats them all :D

The lathe: *the scariest machine in a workshop* Martin: "So much fun!😄😃"

@leoelamri4054

9 ай бұрын

He's so innocent, that's why he's not affraid. But with the few mistakes he made and learnt from, I think he is coming of age on the lathe now. Maybe he is affraid now.

@christianvanderstap6257

9 ай бұрын

Tablesaws can be spectacular as well, but yes a lathe is like an alligator

@maesto

9 ай бұрын

It is fun though! And it's say our planer would be the scariest machine in our workshop. Not that the lathe wouldn't f you up if you don't pay the proper respect to safety

@christianvanderstap6257

9 ай бұрын

@@maesto the metal working one? Cause those seem highly disrespectful of limbs...

@lithiumdeuteride

9 ай бұрын

They are fun! Significantly more fun than a mill, in my opinion.

For hole prevention during welding: Chamfer the edges that are going to be welded. This promotes weld penetration, makes welds much stronger and prevents air pockets from forming if the setup is managed correctly.

@mazingdaddid

9 ай бұрын

How much of a chamfer would you suggest? I'd suspect it would depend on material, correct?

@kancelas

9 ай бұрын

@@mazingdaddid Proper penetration doesn't depend only on material. It also depends on voltage, current, bead width and arc length from wire to the weld surface. Chamfer just adds more surface area for proper welds to stick to.

12:19 The outside diameter was probably harder and thus overheating due to heat treatment during the welding

@---Michael---

9 ай бұрын

Would be interesting to know which steel he used and if it can air harden or which filler rod was used if he did use any

@billkeithchannel

9 ай бұрын

Yeah the weld material was causing the sparks. And when using a carbide insert you are supposed to take off more material per pass to get a better finish.

@mtaiga9001

9 ай бұрын

In my experience in the USA, parts like that would be A36 or something similar. It can be case hardened so if it's laser cut or welded you'll get a shallow hard area in the heat affected zone.

@StuffandThings_

9 ай бұрын

For lathing steel like that, coolant prooobably would have been a good idea

@spooba-4060

9 ай бұрын

Also going way way too quick

It's bad luck that the chuck had to be tightened AFTER the center hole was cut to size. That chuck has 4 independent jaws, you could have used that to carefully adjust the hole back to center again. It wouldn't be perfect, but you could get it reasonably close and then re-machine the outer diameter to make it concentric to the "new" center. You did amazingly well with so little training and no instructor available! Well done Martin! ⭐🙂👍

The entire MMX series has been so wonderful for watching someone first learning these techniques and falling into presumably common pitfalls.

1st great improvement for a rookie turner! 2nd get a pro if you want super accuracy/perfect… you have discovered 4 of the 50 things to get the kind of accuracy I believe your inner perfection monster. :)

@billkeithchannel

9 ай бұрын

Having a chuck fall off the spindle because it was not tight is never a fun experience.

One other note, after turning the first three surfaces, see if a centering spindle is available for that lathe when mounting for the final side. May be as simple as using the tail stock for centering. Also, set the last flywheel face registering against the already faced surface (if you did that the first time, I missed it.)❤

@jakemauger8377

9 ай бұрын

Seconded. Indicating off of the first face cut after you flip the piece to cut the other face is essential with the 4 jaw setup you have. Imagine as though you want to replicate what a surface grinder would do - make the second face parallel to the first. So long as your first face and ID cut were square, it should be flat after that. Also try to true in the flywheel on the bushing when you put it back on the test rig, as the bushings are excellent for concentricity but may need trimming in for square, just like the lathe itself. Tap and tighten.

@maesto

9 ай бұрын

Interesting. Didn't know those bushings don't do squareness as much. Though I believe besides measuring the first surface there's no real good way to do this in our shop I wouldn't trust the tailstock right out of the gate. This lathe hasn't been used that heavy within the last 6 years.

@billkeithchannel

9 ай бұрын

@@jakemauger8377 Yes when he flipped the plate the indicator should have been on the inside to measure off of what he just turned. I still say he should use a surface grinder to make both sides parallel and smooth.

@jakemauger8377

9 ай бұрын

@@maesto The bushings are good but they're metal on metal, they're gonna hang up a little, and with a radius that big, a little is a lot.

@jakemauger8377

9 ай бұрын

@@billkeithchannel That's a big damn surface grinder for a part that size, but yeah if you've got access to one it'll do the best job.

If you really want to get perfect axial and radial runout on such short parts with large diameters, you can't do it with one part welded from several parts. Your biggest problem is the partial heat input during welding, which leads to partial internal stresses. If you then turn the "stressed part" there are always areas that find space and relax and that will never be round. The best thing to do is to cut a piece of bar stock and take it to a hardening shop or similar trade and let it "soft anneal". The material is heated continuously to about 700°C and cooled down slowly. This reduces internal stresses and creates good basic conditions for a perfectly round part. :) If you now take a machine that is not so worn out, then it also works :) I still wish good luck and much success!

Martin. I respect you and have followed you since I was the 504th view on the original marble machine video. As a retired engineer and machinist, I have some observations: Taking shortcuts in material only creates problems. A solid piece piece of material of full thickness (not bolted together) will always be better. Best practice: when building up material, remove mill scale on mating surfaces. Best practice: Never assume stock metal is flat, straight, true, to finish dimension, etc. I would tell you to have the shaft machined with a specific location and shouldered surface located for the flywheel. An appropriate interference fit will hold the 2 together once assembled. The flywheel should be "roughed in" to near dimensions, with the I.D. (inside diameter) turned to finished (interference) dimension. Permanently mounted the flywheel to the shaft, then the shaft/flywheel assembly is machined to final dimensions. The locking taper bushing is great for assembly/disassembly/maintenance purposes. and as you said, for a prototype, being balanced isn't so critical. However, this will only suffice for the prototype, and should not be considered to be a precision solution for the final machine. Some final notes: Fine precision and shortcuts are typically not compatible characteristics. The more precision desired, the better off you will be using tried and tested manufacturing techniques. I suggest learning best practices, rather than trying to learn how to fix the problems generated by avoiding them. Engineering isn't about doing everything yourself. Engineering is about finding the best answers. There is reason they are called "best practices". Define your acceptable tolerances, then select the best practices that fit within those tolerances, And you'll arrive at finding what is good enough. Lathes can easily reach .0025 mm tolerances or better. Of course, that doesn't matter if your aren't using best practices.

Just remember that it's a prototype, a proof of concept. It's not meant to represent the final build, but to experiment and figure out what works and what doesn't.

@keeperMLT

9 ай бұрын

"Don't fail to learn ... fail in order to learn"

@SirCavas

9 ай бұрын

@@keeperMLT isnt this basically the same? failing to learn and failing in order to learn?

@bragebh7122

9 ай бұрын

@@SirCavas In this context "Fail to learn" means to miss an opportunity to learn. "Fail in order to learn" means here to use failure as an opportunity to learn. 🙂

@SirCavas

9 ай бұрын

@@bragebh7122 okay it makes sense then

@anteshell

9 ай бұрын

It entirely depends what are the goals for the prototype. Some are used to test a viability of a small little mechanic, some are used in order to test out the final build. Just saying that a prototype is not meant to be representative of a final build is factually false statement.

You shouldn't forget that you weldet the pieces and bring a lot of heat and so tension in the parts. When you turned them, the tension relases in some areaes more than in others. Also you should try to turn the same amount of material from booth sides so that the outer discs are roughly the same thickness. Thinner material responds different to this tensions. And your workholding is a bit problematic too. These disks are never pefectly aligned. There is always ab little bit of shift between them. And when you clamp them to the chuck, the first jaw clamps on the first disc, the second on the third disc and so on... This again brings tension in the piece. Ass sone as you release the piece this tension disappears. I think you get the point...

Great job adjusting the issues. Always remember you are the softest thing in the workshop.

@billkeithchannel

9 ай бұрын

I will call Martin "Squishy" and he shall be my squishy.

@WobblyBits_X

9 ай бұрын

So a good target for tools or works to fall onto so they don't get damaged, right? :)

@billkeithchannel

9 ай бұрын

@@WobblyBits_X I guess that all depends on which one is more expensive: repairing/remaking the part or the medical bills.

You are going to ultimately run into tolerance stacking issues whenever you deal with things that need to move. It's just inevitable. I'd suggest picking a runout/concentric tolerance of 0.2-0.3mm and optimize for that. Your average been around the block mill/lathe/etc is going to have a hard time holding tolerances much tighter then 0.1-0.2mm. You generally have to go to surface grinders and hones once you need tighter tolerances. Plus once you add bearings into the mix the best you can achieve is whatever tolerances those bearings have internally. There are things you can do to help minimize tolerance stacking like using pillow blocks with cam or concentric locking collars. Those will clamp down on the shaft such that they are ceneterd to the bearing without any special setup. You can use regular pillow blocks with grub screws but you'll need to center the shaft as you tighten it. It's not hard just tedious and time consuming. I think I would also heed SKF's advice and upsize to a 30mm shaft. Worst case scenario it doesn't do much and best case scenario it prevents vibration and noise.

@BensMiniToons

9 ай бұрын

Perfection and unreasonable tolerances ended the first mmx. That functional part that could never have enough clearance to do exactly what its doing? Balance isn't critical but looks are?! I followed him for years. This project is a hoax.. You could use a car tire and a axel if you needed a flywheel and just wanted results. 10 years of the same pattern. He will remake it and then add complexity's to make it fail. and overcome that. then fail. At some point starting over. repeat. 10 years.

Maybe the brake applying pressure on 1 side only has contributed a bit for the wobble. I would just make those inner holes bigger to fit a larger shaft in a upcoming tweak

@Headlesshydra12

9 ай бұрын

"Borrow" a brake from a bicycle.

Martin, the wobble is in relation to the center axle and bering. If you indicate the face of the plate, that is not flat; etc you'll probably not get it correct. On the axle, with a support by the tailstock would probably produce a better result. I'm not a specialist, far from it; but there you go. ;-)

@graeme.davidson

9 ай бұрын

Take it to a wheel shop and they'll balance it in 5 min.

@billkeithchannel

9 ай бұрын

A live center in the tailstock.

Clearly a significant improvement. Love learning with you!

"No gloves - No arms -- for safety" -- there's the next Vintergatan t-shirt =)

Yes Martin, machining is fun. That is why I built my career around it! The sparks are only in the welded areas because you changed the heat treat in those areas.

Thanks for sharing your answers to the assumed incoming questions at the end, as always. You're communicating your thought process so well, I'm gaining so much from how you share ideas and your paths to understanding. Thank you!

Small tip for the future: use a grinder to make two grooves on the junction of the plates in the OD. Making those chamfers, you can weld better and have a stronger weld. Plus you can turn the OD without removing the welding, eliminating the risk of separation of the 3 plates. I noted you welded also the 4 holes for the vise chuck. Try to use the method you used before: use the chuck as a face plate.

@JnManuelAG

7 ай бұрын

Nice tip, he needs to grind before welding

It's amazing this journey, I've been watching Martin since the beginning. The journey of a musician becoming and engineer. So many years watching wins and loses and it keeps going. Never stop until you achieve your dream.

If the high point and low point are 180degrees out from each other, more than likely the flywheel is not straight on the axel amd your problem is as simple as realigning your bushing in the wheel Edit: I watched til the end, and im pretty sure your not fully square on the bushing. The dial indicator reading is basically showing a perfect sine wave, which means high/low spots are 180degrees out. If it was a specific high or low spot, the readings would be more erratic. Edit Edit: Do a drop check from the bushing face to the flywheel face at 3 or 4 points. That needs to be preferably 0 or as close as humaney possible.

Anyone complaining about you learning to do stuff on your own hasn’t been watching the same channel. Martin, we’re here to vicariously feel the joy you get when you create. Never stop doing what you do.

That’s okay Martin, you learned a lot and when you do the next flywheel it’ll turn out MUCH better. Keep in mind though, this one is already VASTLY better than the one that was on there, so don’t be discouraged. You did good work for a beginner.

@nandakoryaaa

9 ай бұрын

yeah, it will TURN out much better...

your philosophy for what you want to do it yourself is a perfect methodology. it helps you design for production so much better.

This is such a great journey that you're sharing with us, thank you so much Martin!

In the new KZread landscape where everything is bombastic or sensory overload I really love how calm your videos are.

SO PROUD OF YOUR PROGRESS! Keep up the good work and never give up!

Martin: I am absolutely loving the new format of your channel and seeing you taking on the Marble Machine demon again has really inspired me. Thank you

it's really enjoyable watching you learn how to turn metal. Excited to see how the 2nd one comes out now that you figured out your shortcomings with the first. Good luck!

The journey is the goal Martin! We all love yout/our journey with the MM!

I'm waiting for ThisOldTony to chime in and grace us with some words of wisdom.

Great job! You are learning! Keep on!

The journey from amateur to professional is one of learning and personal growth. Your procession through three marble machines is an incredible journey and one that I believe will be remembered in the history books.

You will build the MM3 I can tell :D Thank you so much for your great videos, I've learned so much already!

Keep up the great work!

I love seeing all the lessons learned here. Setting up a successful road to a working marble machine! :D

great learning curve - for all, you and the viewers thanks

Man this brings back memories of being in college at the machine shop, this is a big leap as an introduction to turning, but you're doing fine Martin, all part of the learning process

Nice video I don’t think the taper bushing that couples the shaft and the weel is not made for such high tolerances. I think the wobble came from that.

Hannes “The Crane” 😎

Thanks for sharing these experiments and learning sessions, I am learning quite a lot as you work on this prototype!

We are all here to learn. I really liked your approach on this video Martin!

Chasing concentricity, perpendicularity, and balancing can be one of the hardest tasks to undertake in machining. Specifically balancing. Always always always keep in mind that the balance of the wheel is always in relation to the center arbor, shaft, and in your case the tapered bushing too.

@themazeecho9336

9 ай бұрын

And the flywheel needs to be balanced in relation to the axle in the direction of rotation, it doesn't need to be balanced in the direction of the axle. Wobbling as it did at the beginning of the video will not eat up stored energy as an unbalance in the rotation will.

@STRIKEcorperation

9 ай бұрын

@@themazeecho9336 the wobble in the beginning could throw the dynamic balance out of whack

I learned turning and milling during an internship before my studies and it's actually so much fun. Seeing you learn it, brings back memories

I love your work man, and the prototyping is specifically so things can go wrong before the final production run. Everything shows your design theory is sound so far.

100% agree that every designer should know the basics of a trade to design better. Good approach!

Hannes did the heavy lifting.

@Werdna12345

9 ай бұрын

I was wondering if they had a hand truck or dolly to transport it between workshops

I loved the safety sandals when moving the flywheel. No toes were hurt (intentionally) when making this product :D

I love watching people fall in love with lathe precision. The sound of a lathe cutting metal is the sirens song of the machine shop for me.

You're doing great man. Love your video's. Keep it up! 🤗

Glad to see you’re enjoying the process of learning to turn

"You go to school with the first one and you nail it with the second one" he says, working on his third marble machine 😂 (love your journey)

Setbacks are never fun, but they're always good opportunities to learn if you're willing to do so. Keep up the good work.

@shavono8402

9 ай бұрын

Not fun, but often deceptively productive!

I love your attitude, Martin. You're obviously disappointed, but you're determined to see this as a learning experience and not a failure or a waste. You're doing great, and we're all cheering for you!

its very good to get the "sucking and failing" quickly out of the way :-) , always learn new stuff.

9:39 "do the same cut again without changing settings" => "spring pass" tool and material deflect each other during a cut, so a second pass allows them to both spring back closer to their actual neutral position

25:05 Love this answer. It's important to understand what other people are up against when you're collaborating on a project - it makes you better at fulfilling your own role!

i love this kind of stuff. Cutting edge enginnering out of austraia is an artist when it comes to machining.

I love these videos! Keep it up!

I've been looking at the foot pedal for a while and there's a nasty pinch point near the end that looks like it could cause some real damage, ideally the side profile would be an arc with a raidius that is the length of the rotation point that it's on, and you could use a thin piece of wood to get a curve to cover it. It's hard to explain but I could model it to illustrate if that doesn't make sense.

@Nevir202

9 ай бұрын

Ya, I mentioned the same thing. It's low likelihood in comparison with the danger the sides presented, but anything getting in there will actually be crushed with even MORE mechanical advantage, since that gap only opens and closes by like an inch with nearly a foot of pedal travel.

I would suggest turning the flywheel face while the shaft is installed and clamped. This way you will be dead centre. Even better way is turning between centre’s, in this way you can do the face turning of both side at the same time.

I really love the series so far Martin, been a watcher since MMX was in the middle stages. Inspires me to keep discovering new approaches, fail and end up scrapping it. Maybe revisit and give it a polish.

I would suggest remounting the flywheel on the rod but do while the flywheel is laying face down. As you showed, when youre tightening the tapered bushing, the flywheel is pressing down on the bushing and on the shift from one direction. If you lay the flywheel flat on a face and have the rod vertical you can ensure a couple things. The flywheel isn't adding an extra 20kg of weight to one side of the bushing and you can ensure the shaft remains at a 90 degree to the flywheel when you tighten the bushing. Basically what I'm saying is that your current method of mounting the flywheel to the rod could be causing some of the runout.

Big thumbs up for your strong man!

Awesome adventure! Thx!

Love the flip flops in the machine shop

Welcome to mechanicing 101! Your learning in what we call the "school of hard knocks", and you're doing great! 😂

Guys, I know there are highly skilled people following this project but keep in mind that although this is a working concept, it is still a concept. When you take on R&D it's a learning experience. You won't get everything right. Your methods might not be text book but that's exactly how it's meant to be. The development part of R&D is such an amazing building block for skill levels. Watching Martin work his way though each challenge with this project is a perfect example of how R&D is done. I'm truly inspired but this entire journey. As a production manager, I've taken a few lessons from Martin that have really helped our company.

Glad to hear that you're still going to outsource. A machine shop could get this part perfect.

Massive oversight by the team when changing out the chuck for the 4-jaw! A very near miss should that have worked itself loose, regardless of inaccuracies in the cut. Always check your equipment yourself, make sure that it's damn tight.

Thank you so much for making a conscious effort to say "turning". :)

Doing it yourself to learn more about the process is very very smart, good engineers should always do this (if they can)

7:20 "no gloves, no arms." Compared to Hannes, you're not wrong.

I love to learn too. I understand how fun it is to learn even if the project isn’t perfect. It can be perfect after learning.

I would have a shop cut the blank, out of ~25 mm plate, then have at it with the lathe, multiple layers are more likely to warp, especially when welded together! Best wishes from Northern Canada.

With all the work you have put into this flywheel, I can't help but think, it may have been easier to get it cast in a foundry, and then machine it.

I wholly agree with the final sentiment. Design and manufacture must go hand in hand. It is worlds more difficult to do one without experience in the other.

I am happy to see that you are still learning things. Lots of things can be ordered out to someone else but some amount of work has to be put into it so that it fees yours. I wouldn’t want to go to a concert for a machine that wasn’t yours! Edit: I made that comment before watching the entire video or the explanation as to why you are doing this turning yourself. And I think it is fair enough. Perhaps similar to what I was talking about :feeling like it is yours." Essentially, if you know and understand what it is that you are asking, there is a closer feeling to what it is that you are ordering because it is how you would have done it yourself. I don't think that is a trivial endeavor nor a waste of time. Also, even though the prototype is not coming out prefer, so much has been learned so far! And there is much to be learned from it too!That is the true success of a prototype!

@br52685

9 ай бұрын

Since when has any concert-musician made their own instrument?

@Vendavalez

9 ай бұрын

@@br52685 not very often, perhaps never. But that’s the appeal for me here.

After he says „ID“ you know you watched to much wintergatan, when you ask your self: „What idea does he mean?!“ 😂😂

15:49 Martin, I've experienced that exact feeling with a lathe on a SPIRITUAL level.

The prototype has clearly fulfilled its purpose: to increase knowledge and decrease risk. Even though I can understand the disappointment, I would still consider the experiment a success, as Martin's knowledge has been hugely increased during the process (manufacturing, critical design aspects, aso).

This is not the best exercise for a true beginner, you got that right. 1. Start with a bigger piece than you need. 2. Create a truly flat face to which you are going to reference everything else. 3. Turn the piece over and use machining blocks between the face of the chuck and the freshly turned face of the piece, so that you are running true to that reference plane. 4. Then you can do the ID, OD and last face. Possible problems: 1. The chuck itself might not be square. Check the run-off of the jaws and face. 2. The support is really far away from the edge, which might lead to wobbliness when cutting the OD. In this case you can't do much about it, since it's the only chuck that fits the piece on the whole shop...

Enjoyable. While reinventing the wheel (pun intended) for very rudimentary engineering, this does illustrate the purpose of prototyping very well. The process is always iterative. The trick is to skip steps by learning from what came before.

Armchair tip: dial indicators are delicate, and it is recommended the feeler tip is lifted off the work piece during "whacking" so the shock is not transmmited into their gear mechanism.

The sparks on the start of the face cut were from the hardened material that formed when you tig welded the OD

Very nice job! I was a bit scared at 13:14 when I saw the insert shifted, but luckily it didn't move out

Everybody loves heavy metal spinning on a high powered lathe !! I think Jimmy Diresta will agree, you don't necessarily NAIL it on the second try, but you will see major improvement.

I would definitely have a professional turner with you to help balance the final wheel.

@joepatbob

9 ай бұрын

plus using 1 solid spice of metal will be a better flywheel

@SirCavas

9 ай бұрын

maybe watch the video fully before commenting

@brianknow9142

9 ай бұрын

@SirCavas be nice, I did watch to the end. I was agreeing with Martin. I'm sorry it didn't come off that way. However, even if I had not, I don't appreciate being attacked. I'm here to support Martin and his journey no matter where it takes him.

@SirCavas

9 ай бұрын

@@brianknow9142 I don't care whether you appreciate "being attacked" or not. Your comment reads like a smart-aleck commenting without even watching the video. Agreeing with someone who already determined his actions is redundant anyways

the best thing you could have done is to get a collet set which can receive the shaft, where you would clamp the disc permanently in place and machine it like that. and have in mind: every time you take a part outfrom the machine, you will loose every established precission you created before. so the best thin you could do is make the machining one big operaion. happy building, great to see you learning :)