Gday Max, there’s always a first for everything, spray welding is really interesting and I’m thinking it’s not something that can be mastered overnight, I’ll have to look through my brazed carbide, possibly some micro 100 there, I’ll let ya know mate, top job, cheers

GREAT tip about moving the copper shims, that will go in the old memory hole! I always learn something from watching you work, you do a great job explaining things, THANKS!!!

G'day Max, Dang good bang up job... Thanks for the full detail explanation and process. The metal spray seems like secret alchemist process. Always amazed that it can bond and form at such low temperatures. Guessing it's a heat driven sintering effect that creates the magic.. Great video will see you next time.. Cheers....ATB...

Max, I've seen flame welding before, and I feel you did a superb job. Very nice.

Hello Max. At the gas turbine overhaul shop I used to work at we did shafts like this constantly. Probably several hundred a month. We also used to build up bearing pockets with a similar metalizing technique. We had large lathes (30" swing with 25 hp motors) for some of these parts. The metallizing powder would wear the shit out of the slideways and after 10 years the lathe would be unusable for high tolerance work even though the motor had probably never exceeded an output of 1 hp. It seemed like a shame that a lathe that could easily peel off .300" a side in 4340 never took a cut deeper than .010". A shaft the size of the one you were working on would probably cost $25,000 USD from the OEM. At those prices the customer would pay enough for the repair that we could afford to replace the lathes as needed. Yours turned out really well for a first time effort. Ken

That was interesting Max. Pleased it worked out well on your first attempt. I was gutted at first when that big piece brake off, phew lol. Cheers Tony

Thanks for showing your entire process of indicating in...makes me feel better about how long it takes me. Cheers from Florida!

Thank you Max for another great video I really like how your videos are shown

G'day Max, absolutely fabulous mate, I'm watching this at 5.00am after falling asleep last night night trying to watch ffs lol (it was late) Lots for all of us to learn with this one eh, spray weldingcertainlyseems a very specialised job, thanks for sharing buddy, hope your keeping well

Hi Max, nearly jumped out of my skin when I saw 435 degrees then realised it was in bananas not Celsius. Used to get a lot of electric motor shafts metal sprayed on the bearing registers, had to use bearing heater to install bearing. Pulling bearing mostly always resulted in the metal spray coming away, but it did the job over many years of service, off to the metal sprayer, kept the economy going. Surprised the Seco tungsten tool wearing between cuts, super abrasive material being machined.

Very cool process! And a nice ending too...

Great video max,keep'um coming..

Great video Max. Not only very instructional, but with that long adjustment with the jaws, it reminded me of the story of the guy that walked into a bar with an alligator and the punch line was " I would, but don't think I could hold my mouth open that long". Nice to have a good laugh while learning something, cheers.

I never had much luck metal spraying with Eutechtics products, but it was 40 years ago. I got something that looked OK, that then all peeled off as soon as I started the cut. I found the rods to be no better, promised the earth and golden unicorns, got the pigs ear and no silk purse. But it was on board ship with the workshop limitations that imposed.

That demonstration looked like as if you had done this many times before. Confidence always plays a huge part. Thanks for the demonstration. Keep it up. Cheers.

Great summary and results. Thanks Max. Cheers 👍👍😎👍👍 (loved the ending too 😂)

Another awesome video young Max, So much to take in and learn. From kiwi land.

Hello Max and channel. What I so liked in this post was where the lathe technique of quite nice precision as shaft component meets newer, best temp measure (via the hand held tool) and where I believe it is *sintering....as a technique is used to best refresh to a work piece. And what I learned was that as copper shims, slight adjustment can be a method to reach best concentricity. That is to say, best indicated position as to in method, approach a "build up" and further machining. Watching the effortless component as a journeyman (craftsman) reminds me to learn to trust a component set up where further fine adjustment can be practical. And where as my antique lathe has some larger wear as the end user must compensate there for to best result. Also, as method, to protect the bed ways from the operation as flame spray. And the tip as tool post rest to gun distance. Watching, I simply ask myself...."Am I engaged as to best methods to part. And, where I am not afraid to fail. As I try and learn from mistakes. There to test out operation and have a goal as to always, aim for the best part, best safety and have fun. Here, to consider the excellent older machines that can be secured, but with new fixtures and electronics that add to superb result. Thank you Max, for having me along. Your calm comments are brilliant and the view to a machine where long expieriece teaches a shop work flow. Always well done. I really, really enjoy your thoughtful guidance. My personal regards, from half a world away. M.

Max this looks like a #2 radius as they are in 1/64 per radius graduation nothing against what you are showing, Love your knowledge of our trade!!!

G'day Max, I own a thermal Metal spray business in Qld. When I do my undercuts I use a fairly worn insert and deliberately set tool about 1mm below centre to try and achieve a very rough surface finish. I have insert grades that stand up for finish machining but you have to use fairly slow surface speeds. I generally go about 25-30 m/min. Similar to what you would use for hss.

nice job Max--ended with a nice finish

Great work! This is another way how to repair a non-repairable parts. I would like to use flame spray in another aplications too, as example: bore repairs, make some hard coating layer for part and shafts repair too - as just we seen this action in video.

Super video and job Max...I love all the old school Eutectic stuff, cheers!

Good sh1t Max. Luv the channel, keep up the education for us numpties. Cheers 🍻🍻🍻🍻

Good job Max nice work

Another great video from the SVMS. Well done Max

Great demonstration of allowing the job to "Orbit" in a 4 Jaw chuck to radially align 👌. I like that you've used a relatively large radius to cut the helix, as opposed to a very small screw thread form. Metal spraying is a process I've never seen, enjoyed this video Max. Thanks for sharing.

Certainly an interesting process, makes chips like cast iron by the look of it.

Hi Max. when turning off the spray weld it looked allot like cast iron swarf. I have not done any spray welding, had a seal surface on a motorcycle crankshaft hard chromed then had to grind the seal surface down to size Cheers👍

Nice demo Max and it finished really nice. I was repairing shaft for a large shear and we sent it to a shop nearby. I think we had to redo it 4 or 5 times before he did what we wanted. Avery slick process when it goes well, cheers mate!

"Eutectic" is a term I rarely hear - I used to use a eutectic every day in my own role. It's likely the material is present in your body. Dental Amalgam! I don't use a spray accumulation as you do, but otherwise I think the process is very similar. Creation of undercuts free of damaged or weakened material and deposition condensed into that such that "macro-mechanical" retention prevents movement or displacement of the new material which is cut, burnished and polished to perfect shape. Is that largely what I have observed in your video here? I don't know about the undercuts as you refer to the powder "sticking"... yet my understanding of eutectic material was that it would not innately react or fuse with the base substrate. Maybe the ring of material you lay down is using what we term "micro-mechanical" retention to grip onto the substrate? I love building 'stuff' and am an engineer as well as a young retired Dental Surgeon (injuries in Military Service saw me retire) and I love working in a machine shop as much as a theatre operating on patients. Thanks for your interesting and educational videos.

How does the hardness of the repaired area compare to original hardness? How do you go about testing that on a surface that can't be dinged up?

nice job max ! cheers ben.

Yep learning experience indeed I had no idea what spray welding actually was. Really cool demonstration! I'm surprised it sticks so good and holds up that's pretty interesting. Be careful around that big ass lathe man I watched some safety vids and them things make me nervous as hell now haha

Interesting I have always used about a 28 tpi for spray surface to give a larger surface area for spray adherence.

Nice job 👍

Thx for the vid.

Max why not do 2 short bands instead of 1 long bands for the spray? Love your knowledge & vids!

Somebody needs to make after-market seals with the lip(s) shifted by a mm or so, so they bear on unworn parts of the shaft.

Wow just wow.

G'day Max. Worked out really well, with a very nice finish. Just wondering in the Initial setup in the 4 jaw chuck, why couldn't you have used the Tail Stock centre to help line the shaft. Great video, waiting to see you metal spray the smaller shaft

Can I ask, if the shaft is hardened, will the spray weld layer be a similar hardness to the shaft? It’s just that if the hardened shaft wore away where the seal ran against it, will the spray weld wear away faster if it’s not as hard as the original hardened steel? Wondering if spray weld can be heat treated after application to harden it then final grind to finished dimension - or would the quenching be likely to cause the spray weld to separate and peel off? 🤷‍♂️ Just showing my lack of knowledge. Could you not have maybe fitted a speedy sleeve over the worn area? Just thoughts that were running through my head watching this one. Very enjoyable to watch all the same. 👍👍👍

Hi Max another great video thank you, just wondering why you wouldn't use the small lathe for this process

Wish you were my neighbor 😃 got crank halfs that could use that. Pretty neat stuff I've seen abomb do this but uses some yellow stuff keeps spray from sticking. But oviously isn't needed

Turned out good max would it be easier to hold between center as

I did shout to say you were measuring the wrong diameter, but you obviously couldn't hear me.

What would be the smallest lathe you would use for this? I understand a really small lathe such as a 10 wouldn’t work, but why not a 14?

Класс.

Здравствуйте Макс.Напишите как пользоватся тактй же машинкой .Давление и т.д.Нашел такую же у себя дома ,информации нет ни где

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Was that the spray gun I found the rubber orfices for?

У меня новый такой ,как работает нет информации ,Макс помоги .Меня тоже зовут Макс.Я из России,живу на озере Байкал,Город Северобайкальск.мне 45 лет.

When you rotated the shaft in set up, it looked bent?

200 degrees Fahrenheit? what has Fahrenheit to do with today's technology, especially in Australia?

Speedie sleeve

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