The Affordable Micro Shredder for 3D Printing Waste - RMRRF2024

[@DantalionNl]

can't wait for edm to become the next affordable hobbyist machining technique, I can feel it being around the corner!

[@androiduberalles]

I already listen to edm all the time ¯\_(ツ)_/¯ /s

[@gosonegr]

Yeah, machining small car parts is going to be easy as hell

[@ldomotorsjason3488]

It will be affordable like a 3D printer or desktop CNC. SOON!

[@clebbington]

@@gosonegrthat's immediately where my brain went as well. could make replacement mounts and gears so easily

[@gosonegr]

@@clebbington custom gearbox parts, every mechanic nightmare done in the same day and with such low tolerances

[@masongarten794]

Wow. You can really see the passion of these folks. I love seeing them progressively talking faster during the conversation because they are just so excited to get the information out

[@JavierChiappa]

They are awesome. I have followed their machines. EDM is such a fascinating tech for home /micro production. That powercore is something i had hoped existed for like 10 years, lol

[@f.d.6667]

I had access to a professional EDM machine in my last job - the potential uses are endless: chisels for the lathe made from hardened HSS blanks takes minutes, high precision parts from titanium w/o the work hardening, thin-walled jewelry from super-alloys, a complex clamping mechanism that withstands high temperatures? That EDM machine saved us so much time and money!

[@barrag3463]

Random comment but you should be careful with using superalloys for jewelry; dermatological nickel allergies are a thing and they are not fun. From personal experience even just having Inconel chips on my skin for a couple minutes can cause my skin to get hives.

[@f.d.6667]

@@barrag3463You are absolutely correct. Nickel is no joke and we were anal with the alloys we picked for our regular products (professional coffee makers). Some of the stuff we made were display things that only had to survive a photo shooting and were then put in storage. The other thing we found out is that some alloys are pretty "hot" in terms of radiation. Some of our suppliers were pretty careless when smelting scrap metal so we had to check all their shipments with radiation meters...

[@jungletek]

@@f.d.6667 re: "Heat"; that's terrifying! Were these exclusively suppliers from China, or other regions too?

[@arthurmoore9488]

@@jungletek Note that radiation risk is relative, and depends on the type. If it's alpha, then a simple glaze would work. If it's something else, then dose matters. For example, Uranium glass is safe to keep on a shelf and drink from, but probably not the best for jewelry. Course, that doesn't fly for a commercial product without regulatory approval.

[@f.d.6667]

@@jungletek China. From what I hear, a lot of the imported leather goods are so radioactive that they get confiscated by customs... there was a wave of cases of radiation sickness in major cities across China last year that can be linked to the burning of contaminated coal from a mine in Northern China. What virtually nobody in the West is aware of, is the fact, that for every kilogram of neodymium (essential for EVs and wind turbines), the same amount of radioactive Uranium and Thorium is dumped in open tailings ponds and then carried as dust across Northern China and India. Cancer rates of 44% are "normal" in the regions where mining/refining of those rare earth elements is taking place...

[@JamieStuff]

I'm glad to see the Filament Library using the free access/affiliate link model. I'll be sure to use their links for future purchases, even if I'm buying the same filament I've been buying.

[@CNCKitchen]

And not enough people know about it.

[@nicocesar]

You can't deny the passion of the guys at Rack Robotics to make all this. I really hope they can create a successful company. I ordered the fish tank already

[@partyalldaypartyallnight1057]

Did they ever ship out? That's my next machine. For sure. Gotta have it. :)

[@zacattack5783]

Bro, the filament color library is fucking amazing

[@Xamy-]

Support it

[@trashgarbage7234]

Support it! Monetarily, or with filament that's not yet in the inventory!

[@megauberduber]

Super underrated

[@BuzzKillBillZ]

Thanks for showing off the shredder. It was awesome getting to meet and talking with you in person! 😊

[@CNCKitchen]

Likewise! Thanks for your dedication.

[@StanleyKubick1]

Huge shoutout to the EDM guys for making it open-source. Bro's just really proud of what they've achieved and excited to share it, and I'm here for it

[@dingdingdingdiiiiing]

I can't even express how much respect I have for the guys that made that EDM machine. If I'll ever need to machine gears, this would be the way... I'm not sure I _need_ this machine, but I want it.

[@kenmagalnik6596]

With professional wire machines, the use cases tend to be: Since there is no tool to part contact, they are incredibly accurate. If something needs to be spot on, wire it. 2. It cuts anything conductive, without care for how hard it is. It will cut hardened steel. 3. It can cut an almost square inside corner (limited by the wire diameter which is very small). These 3 combine to make wire machines the primary method for making stamping tools

[@gogota_]

Not even diamater but radius :)

[@AllSeeingEy3]

Next year's innovation: radius-only wires, now with 100% less diameter! improve accuracy by only using the part of the wire you need!

[@judlex7300]

What if square wires were made, would that make a perfect inside square corner

[@gogota_]

@@judlex7300 That would be sick at one point but there are other options. On corner wire edm stops for short period of time to machine corner. Or you can use smaller diameter of wire to make even smaller radius. For that kind od WEDM we use 0.1mm wire instead of standard 0.25 or 0.3mm 😎

[@kenmagalnik6596]

@@judlex7300 almost, but no. You need a bit of space between the wire and the metal you are cutting, for where the spark jumps and where the water washes out the burned metal. It's about half the wire diameter. So with a square wire you'd get a radius of about half the wire diameter rather than the whole diameter. Also, I suspect it won't be an arc, but rather some kind of parabolic who knows what shape. A lot of machines are made to run multiple wire diameters. 0.010 for most cuts, plus .002 for the super fine stuff. But really, .01 inside radius is pretty damn small, and you can usually just deal with that.

[@esteva03]

Bro said "This is good for gears" and he just had me right there. I waaaaant it!!!!🤣

[@G-EDM]

Someone said gears? Two gears for you: kzbin.info/www/bejne/anjclKGlgbR6pMU

[@KillRoy0351]

Diy burr grinder for coffee, yes please

[@felio_]

Getting closer and closer to the dream of a 3d printer 3d printer

[@clebbington]

Especially that four axis machine... imagine making gears with angled teeth at home 🫠

[@DeanRockne]

Makers are going to graduate from 3d printed clocks to home made Rolex knockoffs.

[@button-puncher]

EDM is like an ultra precision plasma cutter. I can't wait to see this mature in the maker space.

[@stelioskoroneos3872]

Its so refreshing to see people so positively "hooked" in the things they do

[@johnr8856]

The hobby EDM is exciting. The ability to accurately make small custom gears and metal housings is a game changer.

[@Palte]

The color library and the website are insane work! Absolutely love the enthusiasm and love the project!

[@AzaB2C]

The EDM machine with the nano light saber demo was awesome to see in person.

[@bigb0r3]

Home mini open source EDM! Thanks! Didn't know. Mini machinist holy grail.

[@shazam6274]

These two guys at Rack Robotics EDM know their stuff, inside and out! Very impressive! Looks like a mostly "turn key" unit for practical use will end up ~ $2000 to $4000, which is and absolute bargain! Good luck to them and thanks for the work to get it to "here".

[@arthurmoore9488]

That's the kind of thing every machine shop is going to want right next to their 3D printer. Massive market for "it just works" while open sourcing everything.

[@thomasrogers8239]

I was really interested in the EDM Kickstarter they did, I'm glad to know I can still buy the stuff off their website

[@ummthingy]

EDM is amazing. I program EDM professionally. The limits are endless.

[@gogota_]

Same here :) im working on FANUC and Agie charmilles EDM machines :)

[@chriss2295]

Disrupting the Edm market is natural. Nice work!

[@HenryKlausEsq.]

So many enthusiastic young engineers, programmers and designers. Can't help but feel encouraged by these fine people.

[@stevehood9469]

That filament color guide is really handy. I’ll def be using that

[@ericlotze7724]

The ability to make High Quality Injection Molds for things like the Precious Plastic type “Makerspace Scale” Injection Molding Machines would be a HUGE improvement this Open Source EDM Development is Enabling. I don’t know enough about injection mold design, and force needed etc, but if they can get molds that can reliably churn out actually useful/valuable things like LEGOs, or Buckets etc that would be huge.

[@Hukkinen]

Excellent point. Is the mold part what is expensive in injection molding? So does EDM disrupt ejection molding also?! WTF?! :.D

[@crytocc]

@@Hukkinen Yep, the mold development (several prototypes and a final one that lasts for enough production runs) is generally the expensive part of injection molding. Needs to be highly accurate, but also very strong, and often with mechanical designs to be able to get the resulting product out. Once you have a good mold, every individual production run is cheap.

[@dimitar4y]

wire edm = gears, fine detail, watch gears, micro pcbs, tooling for lathes/mills, compliant mechanisms oh, also dancing.

[@SianaGearz]

Is wire EDM one where you're not dancing yourself but your arms and legs are dangling from a puppeteering rig?

[@dimitar4y]

@@SianaGearz that sounds accurate.

[@G3ML1NGZ]

The wire EDM machine would be a godsend for me in NDT. I do ultrasound flaw detection in industry and being able to machine a "test block" that would have miniscule flaws to practice before a full run would be great.

[@KarriKoivusalo]

This is enormous news, I've been waiting for this technology ever since Ben Krasnow demonstrated a sort-of-affordable EDM plunge drill device some years back! I have a hypothetical project that would require high precision machining on very tough steel (e.g. hardened 4340), it would be tremendously useful to have the cut made on a hardened piece to avoid distortions from the heat treatment process. I am very excited with the prospects DIY EDM will provide.

[@nukedathlonman]

I can think of a dozen uses for Open Source Electrical Discharge Machining with my RC's. I'll have to keep my eyes on this project. 🙂

[@iteerrex8166]

Wire EDM machines have been very expensive. This is should do very well.

[@GreatJoe]

"high voltage" "65 volts" oh, that's adorable :3

[@button-puncher]

I LOL'd at that too but that's where electric code has the break. It used to be 70V but they dropped it. (Can't remember what to.) I worked with 70/100V PA systems and laughed when they changed the rule. I've never heard of anyone getting hurt by a PA system.

[@ZURAD]

@@button-puncher Where we are, the limit for "high voltage" is 48V. We are legally required to let people know this.

[@hellterminator]

@@button-puncher LOL, in my country low voltage is bellow 1000VAC/1500VDC. We do have a lower class which would literally translate to "small voltage" and that's bellow 50VAC/120VDC.

[@miguelangelmxdz3861]

In some companies like the one i work, we consider high voltage from 50v cause the amperage is the one killing you.

[@meisievannancy]

I was expecting 20kV for spark eroding, but 65V it is 😂😂 !

[@gfixler]

@26:50 I have a bunch of hobbies, including the fiber arts, and this happens all the time with yarn, too. You always have to look at the dye lots on the yarn labels, to see which were dyed together, and therefore have the same color. If you get yarn that looks identical, but has different dye lots, and then knit with one for half a sweater, and with another for the other half, you'll most likely see it. It'll look like half the sweater was left out in the sun for years and faded a bit. You can get around it pretty well by alternating skeins every row. That's a bit harder with 3D printers.

[@Latrocinium086]

Yes! Yes, I would love to see an inexpensive part grinder/granulator!

[@laurahaaima1436]

You could make insane cooling ribs with it with gigantic surface area.

[@Hukkinen]

Food-safe? LOL?

[@chunqk]

List of things to further DIY for EDM: A controller to handle all of the below. Flushing! Pumps, nozzles, variable water pressure, high and low flushing conditions. Deionizing filter, industry standard is glass beads in a bottle that can be recharged. Water resistivity sense, so that the DI filter doesn't make the water too clean. Water level sense, so the work tank can cycle water by itself. Paper filters, to clean out the larger chips. Wire sensor touch, auto wire threading, and water chilling are probably out of reach. Not a bad deal if you can't buy something like the Sodick VN400Q.

[@SolarMillUSA]

Water chilling doesn’t sound too unapproachable. You can get refrigerated units for laser cutters and Tig welders for relatively cheap. If for some reason the metallic sides and parts too many ions into the water, then I could imagine an open source solution with a plastic coil submerged in a refrigerated heat exchange fluid being a good community project.

[@jimbarchuk]

There are '6 pack fridges' for $50.

[@koutatsu2381]

@@jimbarchuk you could get peltier coolers which are what those have, but they're not nearly as power efficient as compressor type coolers

[@ridokilos-actual]

Extremely excited about the wire EDM machine, and also any advances in filament/print waste recycling. Keep it coming.

[@hellocreeper88]

Edm is my favourite music genre!!! Also I guess the wire thing is cool

[@steelwitness]

as an american who lives very far from colorado i hope you had a good time and i hope our people were hospitable. Im a huge fan and i appreciate your work. these interviews were very interesting. these people are very passionate about their work and i love seeing all these people in one place with unique ideas all united towards the same goal

[@nonsquid]

I would like to see an EDM machine cut a neodymium magnet in concentric conical circles so that each inner piece repels the outer piece in a locked extendable cone. It would be like a magnetic spring that would collapse down to the original magnet size the spring up to maximum height.

[@nicocesar]

Thats a cool idea. But Wouldn't they rotate to attract eachother? I'm a visual person... I need a diagram

[@RubixB0y]

I don't think concentric circles is possible, you need a starter hole for each path

[@EatRawGarlic]

If you're going to EDM within a magnetic field, be prepared for some interesting movements of your wire due to Lorentz forces. Also, the nickel layer on neodymium magnets is there to protect the corrosion sensitive alloy underneath. When you expose it to water, it may lose its magnetism rather quickly.

[@nonsquid]

@@nicocesar Like they do at Benihana restaurants when the chef slices up an onion and hits it with steam and the onion sections rise up into a cone.

[@nonsquid]

@@RubixB0y I think you are right, but how about a thin spiral? I know the neodymiums are brittle and fragile, but it might work once.

[@05Matz]

Also, I'm really excited to see any advancement in home plastic recycling, and shredding seems to be 'the weakest link' right now. I kind of stopped 3D printing items 'recreationally/experimentally' when my boxes for storing sorted waste material filled up. It feels too bad to just throw plastic out like that when it's only been used once and I know the exact material, so I've been kind of... holding out for a way to affordably recycle it, and only printing things with immediate practical uses in the meantime. If you have a 3D printer with constant, closed-loop filament diameter sensing (shouldn't be too hard? Technically you want the cross-sectional area [or in-nozzle pressure?], not just the diameter, since it could be out-of-round, is this really that bad?), you could use fairly inaccurate home-extruded filament effectively, as long as the equipment to shred and extrude it is accessible.

[@ry7hym]

for my study we went to a couple of part manufacturers that also used Wire EDM and i have to say, what these two guys did is raelly impressive, even if it's only a part of the quality of industry standard machines. this is the kind of machine that would fit nicely next to your desktop 3D printer standing in the workshop

[@bobkaster1]

The EDM machine is so cool. Looking forward to finding an opportunity to picking up one of those machines. And the color matching library - that's a resource that I hope never goes away.

[@arklanuthoslin]

already had the link for the filament colors library saved, wonderful idea. The EDM equipmentlooks really interesting. Also, yes, I love the idea of the mini shredder. I've got a few "medium" size moving boxes full of waste PLA just waitingto be shredded and re-used. that'd be a start, at least.

[@AronBuilds]

I used to operate EDM machines at one of my previous jobs and it is STILL one of my absolute favorite forms of metal machining. I was making jet turbine components and the tolerances we worked with were the tightest in the plant. Incredibly fun and ridiculously interesting!

[@Sttreg]

for the micro schredder: The fact that there aren't any "easy" and "Affordable" way to shred failed prints is the main reason I am not building an artme filament extruder. That micro schreder is a great step, as poop filament is already a large amount of waste plastic. Looking forwad to the evolution of this

[@ttabbal]

Well, get the EDM first. Making shredder parts just got a LOT easier.

[@MaciejWiercinski]

Same here. I decided to buy an artme a year ago. I am waiting to get a decent way of shredding first, while new versions are developed. I just hope artme won't close down or shift away from the DIY model while I am waiting for the shredder gap to be filled.

[@I2AT]

We just bought one of the v2 for the ender 3. Looking forward to testing and tinkering with it. These guys are very cool. Happy to put money down on their project.

[@carlettoburacco9235]

The best tool/machine isn't the one that's the best, it's the one you can have/afford/manage. I develop software for industrial extruders: to give you an idea, during processing they use tens of kg of plastic per minute, the feed screw alone weighs 20 tons and they have tanks of 1 or 2 tons of pellets. They are certainly better and faster than our 3D printers: but if you don't have several millions, a warehouse, 4 or 5 operators etc. you can't have or use it. Same thing for CNC: I modified an Ender 5 Pro and a Plus to also use a spindle. In aluminum I can only do 0.16/0.2 DOC: slow but better than nothing. Next thing: EDM for sure.

[@MarksGoneWicked]

Definitely down for a shredder! Especially if it can handle HDPE #2 plastic. I have a huge collection of colors.

[@HexenzirkelZuluhed]

I'd like an EDM machine. Price point around 1000€ sounds good. Please keep in touch with these guys. Maybe sell their stuff on your shop even? Sourcing US products in germany usually sucks. I'm sure you know what I'm talking about.

[@jungletek]

I think that's going to be one of the benefits of these guys (Rack Robotics, etc.) open-sourcing their designs, you should be able to pick up local(ish) equivalents or, since you (and the community) have access to the design and associated files, you can adapt for local supply availability.

[@matanuywild2726]

YESSS give us a smal shreeder for failed prints at home. pls i need this

[@AerialWaviator]

Thanks you @CNCkitchen for constantly sharing such inspiring topics. EDM is an amazing example of technology that could be readily available to hobbyists, and professionals. EDM combined with 3d-metal printing offers so many amazing possibilities. Truly stuff of sci-fi becoming reality.

[@LikeAboss168]

That first EDM guy was talking to people who know nothing and introducing people to it the second guy was KNOWLEDGE

[@ethanmiller5487]

Industrial EDM machines have apps for your phone to monitor weekend long burns. Most mold shops have at least a sinker and a wire EDM. I'm a laboratory machinist at a university in the states so I get to cut lots of weird materials. I've would love to cut a diamond!! My least favorite material to EDM is some weird steel (can't remember the name) made for heating elements. Kept breaking the wire no matter what setting I changed!! Grr!! WC cuts like butter!

[@dac7046]

Yah I can see an EDM machine in my future. Disappointing that I live 10 minutes from the event location but didn’t know about it until I saw your video.

[@OldCurmudgeon3DP]

EDM isn't quite the same, but works on a similar principle to Plasma cutting. EDM = scalpel Plasma = axe

[@shmafoo]

Props to the EDM guys. It's a very interesting and useful technology and making it available for cheap (compared to regular EDM) will make a huge difference. Looking forward to how this will change prototyping and small scale manufacturing for small businesses and hobbyists.

[@BRUXXUS]

Heck yeah! EDM for all! That is extremely exciting to me!

[@MarcStollmeyer]

The filament library is a gamechanger! Wow thanks for sharing!

[@michaelbraaten]

I love the Wago bus on the tool head! I use all different kinds of Wagos for low voltage AV/datacom projects at work :)

[@HexwareGaming]

Thank you for pronouncing Loveland correctly! So many people (especially on tv shows) pounce it Love Land

[@ivovass195]

Very cool exhibits you showed here. The cutting tech that can be available for the enthusiast is great. The filament indexing and color matching website is superb and will definitely be using that. Thanks for sharing your experience

[@964cuplove]

Unglaublich was die Leute alles machen - echt geil !!

[@Tome_Wyrm]

Absolutely yes. An affordable shredder/extruder combo to turn my failed prints and purges and brims and support into usable filament again? Even if I have to get some virgin plastic pellets, it would be SO worth it. Same thing goes for water/soda bottles. I would much rather use them for filament than sending them to the recycling center. Especially because I'll know they're actually being recycled. A lot of post-consumer plastics don't actually get recycled for various reasons.

[@RaviVemula2]

we utilize sinker EDMs commercially for med device manufacturing. super cool to see the tech making its way to the hobbyist scene!

[@leogray1091]

The Shredder is really eye catching! I want to build one and get a filament extruder now.

[@MA-qx6rn]

Rack Robotics are amazing for making this open source, I cant wait to build one they have so many uses!

[@NullBlox]

Id be making a ton of Electric Skateboard parts with this! This thing is awesome! I want I want I want..... Wait.... I need, I need, I need! Im excited to see what happens when these get in the hands of the creators and artist! This is not only game changing but could be life changing for many! 11/10 keep turning it up!

[@DaedalusHelios]

If reliable, I could see purchasing a larger unit for my engineering department. I would love one for EDM cutting large gears. 40k USD would be a good target price for a large corporation to not blink twice on it.

[@05Matz]

...open-source CNC wire EDM could provide a novel path to the last few precision metal parts required for the old dream of a (room full of) Reprap(s) that make all their nontrivial parts. At that point you need... some way to source or produce ceramic tubes/guides (for the EDM machine, for hotends, etc.), and commodity hardware and semiconductors. I love seeing the capabilities of open-source benchtop manufacturing expand!

[@bossednl]

Cheap shredding is a part that is what im interessted about, to make it a more durable/sustainable/ecofriendly hobby.

[@AckzaTV]

Your channel makes me feel so excited for tech that others may be cynical about and i apreciate it. U make me feel better about all the stuff i bought lol

[@dpuamuishu]

A cheap shredder and extruder combination would be amazing. The resulting filament may not be the best but would be ideal for test prints and prototyping and reduce waste.

[@Petch85]

Having a wire EDM at home would be so cool.

[@marshallwebber9682]

The EDM looks promising if the price and precision can get under that of a used metal mill, which would be the first stop for someone either experimenting, prototyping, or low volume production.

[@Donorcyclist]

Amazing machines, and amazing lavalier microphones, Stefan! Audio quality on this video in a difficult environment was fantastic!

[@sikryd]

There are machine shops that use EDM to drill down into hardened steel like broken taps or other hardware if you are unable to remove them with heat or easy outs. Amazing tech.

[@SolarMillUSA]

Outstanding work guys

[@astaschak]

we send out a lot of work to our parent company for their edms, definitely a super useful manufacturing technique. I small form shredder for plastics and stuff would be super useful for me. This one is a bit small but I like the idea. Sometimes I have to get rid of things that aren't recyclable and I can't find a new home or use for and have to just toss it. Shredding it could reduce the space the waste takes up or possibly give me an avenue to mess with dome diy extruding or something.

[@mecha417]

Wow, some actual good news for us mere mortals for once and not corporate-to-corporate shilling with exorbitant pricetags.

[@refusefntk]

I love this story and the developments these guys are making in the process. These machines will change the world for makers.Thanks for your hard work guys. I look forward to seeing Production. I will definitely buy one, once the kinks have been worked out.

[@skysurferuk]

As a retired U.K. Boilermaker, now hobby maker, I would love to hit Open Sauce. I just cannot justify the cost of flying over the pond & the $200 admission. Love the E.D.M. Great coverage, just the right amount of detail.

[@user-ev5ur7fw4t]

Man the EDM is mind blowing, Epic job guys keep it up looking forward to buy one soon.

[@magomat6756]

My dad was head of matrix maker shopn and there was such a big machine the wire was copper tools and the medium was a sort of oil. It was end of '70. I loved that machine its was magic at the time for me.

[@MinecrafterPiano]

Saw their (Morlock's) Betta Wire video a few days ago - really excited for it, though I'll wait a while before purchasing one. I have no right to request this, but it'd be nice if you could link to their video in the description for those curious - I think it'd be enjoyed by this crowd.

[@HenryKlausEsq.]

Super cool! Open source machining, CNC, printing is moving at speed. Can't wait to see small components like what you'd see in a mechanical watch made with Open Source EDM.

[@Willy_Tepes]

With an EDM machine I could at last make use of the titanium and tungsten I have in my scrap box. It would even cut tungsten carbide heating elements.

[@JackDavis1111]

Damn, that Rack Robotics guy is so well spoken

[@MrBizteck]

I love the innovation. For me I've been looking for a small scale shreadder for ages. Most current ideas are too expensive and bulky. I'd love to give that diy one a try.

[@ikocheratcr]

The filament color match is pretty cool resource. As a future enhancement they might get full spectra under controller light, not just RGB from a camera. That will help with color rendering index issues from LEDs or any other source they use, or one uses, to get the most consistent results. Also for those filaments that fluorescence, maybe also have a controlled light source to trigger that, ie UV in different parts of spectrum. Very neat idea.

[@AhliahJo]

Hi! They use a spectrophotometer for the color measurements, and are working on getting an improved one in the future. The photograph is used for comparative color.

[@tobiasjennerjahn8659]

The Bettawire looks absolutely amazing. I was wondering when someone would build something like this. I'll wait another year or two to let them iron out the kinks, but I'm pretty sure that I will buy one of those sooner or later.

[@Jessterrr]

Those Robo Rack guys have done some impressive stuff. EDM isn't something that I've considered. I remember seeing an article in Popular Mechanics as a child about making a simple home EDM for busting out broken taps. It's really cool to see such a thing refined and polished so many years later to the point that it's a fully automated process.

[@pb_magnet]

On the filament colour library... I will definitely be using this! I've bought some truly disappointing filaments in the past, from a "gold" that was more brown to "orange" that was "emoji yellow" (fortunately I had good uses for that one).

[@Davedarko]

really enjoyed the interview with the EDM people

[@Torskel]

This would be great for Watch-parts

[@AckzaTV]

I love how it looks like a prusa in an aquarium.

[@austinvw1988]

Im currently in the CAD design phase of making a custom EDM machine myself! I hope to upload videos to my channel in the following months after I move. I'll probably use the rack robotics pulse generator and a onefinity cnc as the xy and z gantry. To my knowledge one thing not mention at all by Rack robotics and CNC Kitchen is the water filtration system and the lack of having no flush cups which would GREATLY improve speed and quality. EDM is a lot more complex then a hot wire foam cutting machine. Half of a real EDM system is the water filtration. I love what rack robotics is doing for EDM but I strongly believe rack robotics is overengineering their design. A core xy machine for EDM is stupid and drives up the cost for no benefit and because half the machine is submerged in grimy water expect rust because 316 stainless steel is not rust proof. For larger parts, production parts, or if they want their machines to last rack robotics needs to find a easy and cheep solution for these fundamental problems without stupidly overengineering.

[@abowden556]

I know for a fact they are developing a water filtration system for this, I've seen the CAD.

[@shazam6274]

Can hardly wait for your genius design, so I subscribed to your YT. I'll check back in a year to see if you got anything usable.

[@austinvw1988]

@shazam6274 Thank you 😊. I'll get most of my rough designs done in a week or so and make a video about my main design choices. I'll start buying parts in the falling months after the move, but the build won't be complete for at least a year, but I'll always be making small improvements.

[@joncorso6103]

Filament library could be really useful once they fill out the selection. Of my 15 rolls of filament I own, a good 7 are missing from the list, including a few Bambu colours. It would be great if all the filament manufacturers got behind this and sent him the tiny lengths he needs.

[@N1ghtR1der666]

the shredder is by far the most interesting, ontop of a cheap shredder we need a cheap filament creator (cheaper than the one you tested already) and cheap filament dryer

[@dodaexploda]

I really would love to be able to cut angled gears with EDM. That would be amazing.

[@the_arcanum]

Can't wait for EDM machining metal molds for plastic injection at home !

[@roamingchemist2514]

I wonder if EDM could be used to make PCBs? Basically, to blast away the copper without the need for resists and all the mess of chemical etching. Thanks for the great reporting. One of your best posts! Sorry I will miss you at OpenSauce, but I will be out of town.

[@G-EDM]

Can be done.