วีดีโอ

your channel underrated af bro

Nice work bro

btw why not use something like plasma torch without gas flow to melt steel dust and use it as 3d printing?

its a crime against humanity for you to not upload more !!!!

glad the project is still alive!

Love your content SO MUCH! Welcome BACK & Do more uploads pls 🔥

Excellent work! I didn't see if this was covered by the other comments, but did you consider a post-print kiln fusing step, followed by annealing? I think that's fairly common with industrial SMS 3d printers, and is not considered 'welshing'.

Please do not do what Micronics did and sell out to Formlabs. We need this!!

Ohh thx for comments back yt

i have absolutely zero idea wtf you're talking about for most of this video, but I like it

Te falta compactar el polvo metálico cada vez que agregas una capa. Necesitas usar un rodillo justo después de la espátula.... Saludos

holy crap :0

Seeing your cubes, I thought you were years away from a decent benchy. Turns out you weren't...maybe we'll see a video showing massive progress earlier than expected

Hahaha "Hidden feature"

Ar lower would be cool to see. And durability testing

Congratulations on this huge achievement! I am sure you are doing lots of test prints, if I could put forward a recommendation it would be a stator for a brushless electric motor

Naive question: maybe I totally misunderstood that part, but why didn't you motor-control the 3 lasers for a perfect overlap?

I didn't understand any of this. I loved it. Gonna watch it until I start to understand. LOL

dope to see what i could do if i put 1,000,000,000 hours in

This is unbelievable

May old printer could be starting point for IDEX, not COREXY but very interesting anyway!

It would be cool if you could use an electrode of some sort instead of a laser.. sort of how they do EDM with the rod

How do we get in contact with you? I think I can send you a raycus source!

Amazing work for a home gamer. If you can get that density up you have really opened doors.

It's funny, I understood almost nothing you said or did, but I couldn't quit watching.

You should be working for Musk.

Way, way, way above my head. I think you are working at genius level.

What metals have you tested this system with?

he went. he levelled up. he returned more awesome! nice one mate! you flushing the weld area with argon, ever try helium? do you have flux powdered in with the stainless powder?

this is some real life mad scientist $#!T

Even if the results look good, there are two main problems at cladding powder, surface tension and powder oxidation. cladding powder that has been exposed to oxidation is main problem. try a protective chamber with oxygen-free atmospheric gases. secondary try to reduce heat tension by heating up your platform to more than 800 K. Thirdly, it would be advantageous to pre-sieve your colloidal powder, of course under inert gas. 🤐It is much easy to clad with powder fractions above 50µm

everything remind me very much of a publication "development of a hollow laser beam for micromachining" by E. Demirci in Advanced Optical Technologies long time ago. cool work, keep on!

Hey! Love the video its amazing, have you considered using electromagnetic field inductive heating in a vacuum combined with individual area conductive current spot/area welding in conjunction with the laser welding process? It would allow for you to force the powder to be compressed and heated slightly with the electromagnetic field source added in from a single above area head, that can be moved around and have the laser still heat the powder, but also have side mounted coils to improve localization off this effect to the powder bed. With a conductive wire pulse, like tungsten, to hit areas (like types of tig welding without argon) when the laser fires creating a lower voltage and amp total to help weld both spots and areas together. Especially when you add the electromagnetic field effect to induce a control of the current flow through the given material. It can help create "rivers" of heat but it can also create "lakes" that dissipate outwards quickly like an "exploding capacitor" but it's actually much more controlled than that. It will also get rid of spatter and any lack of density as it forces total welding to occur like forge welding when you heat it up and compress it/hit it. Which, the vacuum helps, but the magnetic field and heat convinced with current, forces nonmagnetic material to pool up and become energized by other electromagnetic fields and is less resistant to electricity flow which concentrates adhesion and fusion to micron sized crystal areas. Because of their small size, cooling them is done similarity to "tack" welding sheet metal. Corner to corner one side to the other, alternating with a middle pass, too, to let heat dissipate outwards to colder areas. To be conducted away, like top left to bottom right, to middle, to top right then bottom left, back to the in-between is the middle and outer edges, then back to the outer edges to start again. Allowing for a cooled argon to come into the vacuum chamber, then be vacuumed out and recompressed (to cut costs on argon but not electricity lol) then cooled with a heat exchanger when it comes out into the vacuum chamber. A regular air conditioner works pretty well, truthfully. This allows for the powder to fuse exceptionally well and allows for it to be quenched and tempered all in one go, making it stronger and more consolidated into not just a 100% density, but a fully formed piece. It will work with aluminum alloys and other non-ferromagnetic metals, even ceramics, too. 😁 hope it helps you. It's one of my design ideas I have on my xenonreality TH-cam channel.

This is so impressive. Your passion project is much better than mine!

Wow, that's amazing, how do you stay motivated?

Me working on additive manufacturing on a PhD thinking i understand somethings and this guy building lasers in his garage 💀 Wild mate! Continue the incredible job!

Could you print me a certain safety switch?

Hot damn this is some incredible work.

I'm so very very glad you're not dead, and that you'd been working on it this whole time! I think about your older videos a lot, and I'm sure this one will be the same despite much of it going over my head. Great work!

I've only seen two professional machines but both had a counter-rotating roller as their spreader. Not sure how they handle metal sticking up though but I suspect they handle it by not letting it happen. Either algorithmic or otherwise.

Just think about it. If you do something like this and you face an obstacle, there is no TH-cam, no reddit, no hidden forum posts. You have no help. You have to figure it out. Amazing - and I feel so stupid now, this is a whole different level.

It seems like you have a software issue... You aren't using FUSION 360 😂

please dont follow in the steps of micron sls, stay open!

see you in a few years

Man, this is what I want to be one day. Incredibly knowledgeable and capable across a wide range of engineering disciplines.

herb grinder?

I just stopped to find pleasantly that your research is having success. At the end of the video, I saw that you where using Argon (if I'm not mistaken). What about using nitrogen? 17 years ago I was an operator on a laser cutting machine, and I do remember that all the laser diode part was cleaned with fresh gas flow that same gas that got out through the nozzle. I know the process is totally different, but for your first machine, the one with the triangular laser beams pattern, I think you could try even different nozzles. Maybe a chromium plated copper nozzle would do the trick as an non stick tip? However I love this series, and the ammount of work you've put into it.

epic !!!!!!

Wow! Keep up the good work!

The weed grinder heatsink is peak hacksmithing