Impressive 3D Printing Technology at FORMNEXT 2022

[@William3DP]

To me, the APIUM layer heater was the most exciting. The possibility of having 3D printed parts with strength properties the same as injection molded parts sounds like a game-changing technology. I found myself wondering if a laser working alongside a nozzle could have a similar effect.

[@fredfredburgeryes123]

Or maybe a car headlight bulb with a little reflector? Or perhaps just use part of a coil cooktop basically like they did, bit of tempered glass and you're good.

[@EvanzoZubinsky]

laser idea is brilliant, IMO, the only problem is you would have to calibrate laser intensity for different colors, because obviously darker filaments would be much easier to heat with light vs lighter ones UPD: also I guess you could use IR laser, which is more efficient at heating and less reliant on filament color

[@fordgeher]

There are scientific papers about the laser solution and it has already been tested so far. I guess that the solution of APIUM is a bit better, because it spreads the heat more evenly. I also thought about such a ring heater a few month ago but for desktop printer. Maybe it would be nice if Stefan could craft something like a copper ring around the nozzle that spreads heat in a bigger zone around the nozzle. But this copper ring needs to be very close to the layer, otherwise the heat wouldn't get to the printed part very effectively.

[@fredfredburgeryes123]

But then you run into the safety issues you usually run into with lasers, such as going blind or setting random stuff on fire. A filament bulb would emit full spectrum light over a wider area, which seems to be part of the secret sauce. Slightly melt a wider area to bond whole layers, not just the one line you're currently laying down. That and there's basically no real safety concerns beyond what you already have with heating elements and electricity. Something IR would probably be favorable just so most energy is getting turned into heat instead of being wasted through reflections, maybe slightly undervolt a small PAR halogen bulb like the ones used for display cabinets and such. Maybe a lizard bulb even.

[@Enkelados1]

@@EvanzoZubinsky you would also need to aim the Laser, else it can only heat the path when the printhead is moving in one direction.

[@plasmics3d]

Hi Stefan! Thanks for the feature, glad you came by. We're figuring out the final steps of production as we speak and are thrilled to put it out on the market to push the 3D printing even further!

[@CNCKitchen]

Can't wait!

[@sammorris2721]

That Induction heater is brilliant! I am surprised that it wasn't implemented sooner as off the shelf parts exist for inductive heating, the concept of milling a tool steel nozzle for it isn't far out!

[@russ-techindustries]

I know! It makes so much sense!

[@sammorris2721]

@@russ-techindustries I could see an ender 3 add on, just taking the heating and cooling times into account. Seems doable. Probably use some optocouplers and an op amp with some thermistors to keep the Temps in check and a very good fan for rapid cooling...

[@makers_lab]

Totally agree. Inductive soldering irons are the slimmest and lightest I've ever used and similarly heat up in just a few seconds. Would be great for a nozzle.

[@davidelang]

@@makers_lab makes me wonder if someone could hack an inductive soldering iron for this purpose.

[@makers_lab]

@@davidelang Maybe a variable temperature one (mine has no sensor and relies on the bit's composition and Curie point to maintain a specific temperature). I think a driver should be pretty straightforward though, doing high frequency PWM of a coil.

[@riskable]

That wide heater around the nozzle is brilliant! I bet it'd work fantastic with POM as well as PEEK. POM is such a pain the ass to print... Getting accurate dimensions is basically impossible because it shrinks *so much* while it cools. It also won't stick to itself if you don't keep it really hot. Cooling helps with dimensional accuracy but then you end up with layers that delaminate far too easily. With a heater moving over the print that'd (probably) fix that problem entirely!

[@bryanst.martin7134]

You did note that it was inductive? Heats only the Ferrous material (Iron, Hardened steel) and coupled with an IR sensor can be very accurate and dynamic in temps throughout the layer.

[@BrainWearmouth]

I think you 2 are talking about different parts. The “print area” heater looked brilliant for printing those hard to print thermoplastics! The inductive heated nozzle also looked really great for those as well but it wasn’t demonstrated printing PEEK with perfect layer adhesion…. I want both!!

[@JoneKone]

My question is can you do the reheating with a laser

[@malloot9224]

I'd say it would probably make abs printable without an enclosure, seems pretty useful for DIY machines as well

[@bryanst.martin7134]

@@malloot9224 Why wouldn't you want to have an enclosure? Moisture is in the air everywhere in different quantity. You are heating something close to combustion temps, yet water intrusion (which expands 1000 times @ 100C) you disregard? Cheap enclosure? A big cardboard box sealed with polyurethane sealer. A vent fan with temperature switch to circulate if hot.

[@101rotarypower]

Love the diversity of printing this channel showcases

[@CNCKitchen]

Great to hear that!

[@WilNichols]

I have contacted many recycling centers and industrial recyclers across my state here in the US and most have not even heard of PLA recycling, let alone begun the process of accepting it. I wish I had a way of reducing the most wasteful part of this hobby :(

[@Shep01]

Dyi recycling is still possible but not easy since there is a material variance. Basically to do it right you need a solid shredder and then a wait to clear the inevitable piece of petg that gets in there and clogs it all. Then after you have a blended material. It about melting it back into a filament of right dimensions.

[@Shep01]

OR just save it all up smash it to bits with a hammer and metal it in to a block and jam a handle In it for a soft faced hammer

[@ygayovy]

Fusion Filaments

[@filagain4137]

That's what we found out too in Indonesia. We from filagain run an experimental 'waste bank' for 3D printing waste and haven't found local recycler that accept PLA, even half of them don't even know what PLA is. Ironically 'environmentally friendly' or bio plastics are arguably more harmful than conventional plastic because it's not so common that there is a lack of proper recycling or composting infrastructure to process it (larger bioplastics requires more time & heat to degrades, hence why regular composter would not accept PLA waste), and IMO there might be less attractive to process it because PLA as bio plastics, degrades faster that may affect its recycling viability. If you want an actually environmentally friendly plastic, ironically ABS plastic that is from oil, would be the better option. Because ABS has proven recyclability, usually in demand by local recycler and doesn't requires new specific infrastructure to process it.

[@xrok1]

Ur trading PLA for diesel when ur recycling 🙈

[@RegularOldDan]

To be honest, the Plasmics INo Trident is the most exciting development to me. The idea of precise temperature control, at the nozzle, is very appealing and should help with some of the issues that might arise from printing at vastly different speeds, where high flow can bleed heat away from the nozzle. That said, there is so much innovation here and it's AWESOME to see!

[@ajtessier]

Love the variable nozzle diameter idea. Can’t wait until that makes it’s way into the mainstream. I wish I knew about recycling centers like that in the US. That’s sounds great. Thanks for all your hard work!

[@troybaxter]

Even though it likely won’t happen, I hope every last one of these concepts in this video take off, especially the recycling center. Really wish we had something like that here in the US.

[@SBTRIS]

Crazy stuff - the amount of innovation in this space is incredible.

[@steffen1182]

The "Recycling Fabrik" is what I've been looking for for a while. I have been collecting my defective prints and support material from PLA since day one and have long considered making the filament from it myself. I've already thought about sending you the material for your extruder. :)

[@CNCKitchen]

Better talk to the guys at Recyclingfabrik!

[@troybaxter]

That’s what I’ve been doing too. I literally have a large cardboard box that I am just filling up with waste filament. I do wish there was a recycling center here in the US for this stuff.

[@steffen1182]

@@CNCKitchen I already ordered a label. 🤙

[@yamfish6]

Off topic, but I’ve been experimenting with using a vacuum chamber to force different resins into the voids in FDM prints to improve transparency, strength and air tightness. Maybe it’s something you want to investigate?

[@Machiflores]

Vaccum, then sink the part in resin and then apply pressure. Nice idea mate, you would need to solve the infill voids. Even it would have been a patentable idea.

[@FiglioBastardo]

That's genius right there.

[@apiumadditivetechnologiesg9296]

Thank you very much for the great coverage. This feedback simply raises our confidence in offering the right products. Thanks to all commenters as well, your comments are truly motivating. We do our best to deliver outstanding technology and we are really happy to receive such great feedback.

[@LordMigit]

This is my favourite video you've put out, I love it when you cover new advances in the 3d printing space and the exhibitions are the best place for that.

[@CNCKitchen]

Glad you enjoyed it!

[@jeradw7420]

@@CNCKitchen I love seeing what's new in printing since I can't easily attend myself. It would be great to see a follow up as to where these ideas are at today. Did they improve? Are they closer to being on the market? I have so many other questions on the ideas in this video.

[@marsgizmo]

excellent roundup! 👏

[@waitwott]

9:36 the tooLHEAD got me rolling 💀

[@johnford7847]

Fascinating, Stefan. I was impressed seeing large-scale prints with obvious industrial applications - particularly the automobile body parts.

[@aidenbagshaw5573]

As someone who prints with PEEK, I’ve tried to achieve that effect by letting the heat block spend a lot of time going over the part. It works really well, but print times go absolutely through the roof, and I don’t have an algorithm to control it well. Glad to know I was onto something.

[@CliveBagley]

Good stuff! Formnext is so big and so full it's hard to distil a summary. Well done

[@DanteYewToob]

I actually love the idea of AR guided maintenance.. I would pay for an AR program to help me maintain or fix my motorcycle. I love riding but I’m not super mechanical and I get nervous any time I have to do maintenance, so having an augmented reality partner to show me what to do would be incredible! There is so much potential there!

[@phizc]

Yeah. Too bad the Hololens is still several thousand dollars. 😮‍💨

[@3DPrintingNerd]

Great coverage, my friend! Also very thankful we ran into each other!

[@MitchM240]

LOVE these videos from trade shows! Keep the coming!

[@peplegal8253]

Heating the printed part from above seems way more rational than heating the entire bed or the chamber. I've been thinking about that technique for a while...but using diode laser to focus on the exact point right before the plastic deposition.

[@wallpaper1138]

My toughts exacly when the individual layer heating was mentioned, my understanding is that the relationship between the laser diode wave length and the colour of the thing you want to heat is very important, some colors absorb the laser while others bounce it, that would mean you could only use a small range of filament colours, makes sense?

[@peplegal8253]

@@wallpaper1138 : Infrared laser doesn't care much about colors. There is some variation according to different materials...but we're only interested in superficial heating, so...not a problem either.

[@elobiretv]

What they showed here is for a totally different reason than what you'd use a heated bed for though. A heated bed does nothing for layer adhesion. past the bottom layers. I'd still want a heated bed so that the part stays stuck to the bed until after printing.

[@MarcelRobitaille]

Mihai has been teasing us with his shorts from this event. Thanks for making this longer video that actually gives some details. I'd love to go next year

[@hisfantor]

really amazing stuff, pls do more coverage like these. maybe in a similar format you could go over new patterns or papers that push the field forward

[@Sekir80]

Hey Stefan! Yes, please bring us more news like this!

[@FiglioBastardo]

I agree.

[@JeffLarkin]

This was the most interesting 3d printing videos I've seen in a while. Thanks for sharing it.

[@RolandGustafsson]

I appreciate the pace of this video, learned a lot in 11 minutes! 🙂 Sometimes interview style videos at these events can be a bit draggy, unless the person you are interviewing is super interesting and engaging. 🙂

[@CNCKitchen]

Glad it was helpful! I enjoy such a format way more than too long interviews.

[@Repkord]

Excellent coverage Stefan! I was there and I STILL missed a lot of this! Glad I had you to cover the parts I missed! 💪🏼

[@andreicheptea8020]

The adjustable nozzle and heater for better layer adhesion are really good ideas

[@highnotejazzer]

The heat lamp is amazing!! I would love to be smart enough to make my own for my printers

[@ElectraFlarefire]

This format works well, short, to the point with enough different things that it can be casually watched. A contrast to your much more detailed technical details.

[@bradley9856]

I'm very happy a 3D print recycling company now exists, I was wondering about a year ago why it doesn't exist yet

[@NerdlyCNC]

Amazing innovations..people can be so brilliant when they're passionate.

[@3DJapan]

Fraunhofer has done so much cool stuff, including creating the MP3 audio format.

[@GuilhermeTorelly]

Very interesting! I like the format, it's a good balance of video length and quick information.

[@SirLANsalot]

the idea of 7 nozzles is one way to get around the issue of needing a transition tower when trying to print things "in color". Heater idea was cool too for mechanical parts.

[@dylanb9341]

That APIUM technology may bring huge improvements to industrial 3Dprinting for sure! Its great to see how fast 3dprinting is developing, and all the community has to do with that

[@jamesmatthew2677]

The variable nozzle size is very interesting. If you find more information about them, a video about that would be nice.

[@SeamusHarper1234]

Wow, this APIUM layer heater is a really nice innovation. Layer adheasion seems to be the biggest drawback of FDM prints so improving this is awesome! Maybe it will even be more produktive than SLS printing?

[@thenextlayer]

Great coverage bro, you saw things I didn't even know were there, and I was there for 4 days!

[@CNCKitchen]

Good thing I hired someone to help me find interesting booths ;-)

[@JJShankles]

These are some amazing technologies. I'm interested in the Inductive heated nozzle. I seems expensive now, but could be way better that using a basic resistive heater cartridge.

[@andyspoo2]

It's also pretty long. I doubt anyone could make something like that fit on to anything like a consumer printer.

[@AllscottyD]

I’m most intrigued by the pellet printer and being able to print with a 3mm nozzle - for large prints it could save days

[@FiglioBastardo]

☝this

[@tokugero]

Please keep going to these! This is amazing!

[@jamieclarke321]

The layer remelting idea was really good and would be soo easy to implement at home

[@amoose136]

It would be easy to make the hardware part of it anyway. Software simulator part is not so simple.

[@jamieclarke321]

@@amoose136 the software doesn’t need to be very complicated, just heat the part at a lower than optimum level, it would still increase layer adhesion above a stock printer. Company’s like to make stuff sound advanced by using the term “proprietary algorithms”

[@RuskiVodkaaaa]

finally, actual innovation is coming back to 3d printing. Seems like ever since Bambu Labs released their printers we've entered a second golden age for 3d printing. Hopefully consumers can get their hands on some of these technological advancements soon.

[@ska042]

In the industrial/business space, it never left, there's been amazing stuff on almost every trade show but most of it never gets seen by "normal" people. I do agree with the sentiment for the consumer/prosumer market though

[@FiglioBastardo]

And bambu's stuff is all proprietary too. Your're at their mercy for replacement/upgraded parts.

[@ViiKing_]

I love this, so much so that I'd even want a longer video with more details on everything

[@amoose136]

Very much liked the desktop tensile tester, the inductive nozzle heater, and particularly the heater shroud. Having only 40-60% of the XY tensile strength in the Z direction has always sucked as a design consideration and it looks like they practically just solved the issue with little compromise except perhaps you can’t use it on layers where you’ve just bridged without the bridged region sagging immediately.

[@GregAtlas]

That sculpman ribbon nozzle could potentially just use coasting and then close the nozzle completely rather than worrying about retraction. Not going to ooze if there's no open orifice.

[@rcmaniac25]

That's an awesome set of projects. The thing that stands out to me is how the printers seemed to be split between "this is a large sheet metal-built printer with numerous linear rails and industrial design parts... even it's just one specialized component (usually extruder)" and "this is literally a Voron with a specialized component (usually extruder)"

[@Maxinator_RC]

I am an RC guy, (intersted in Remote Controlled cars) and the most interesting part for me was APIUM's perfect adhesion. As some parts on my cars broke - I tried to print some parts in order not to buy new ones, and I always had that problem where the part would spilt in half and then the car just brakes. I guess it would be epic to make some parts using that APIUM technology!

[@pirobot668beta]

Variable heating at the nozzle opens the possibility of gradient-density printing for making lens blanks. Not just the shape of a lens bends light, the density of the material plays a major role. Having regions of a lens at higher or lower density than others opens the door to disk-shaped lenses that perform as if they were domed.

[@redwraith6576]

I love recycling fabrik, since they started I collect all my waste and failed prints sorted by material and also the old spools. You will get shop credits for sending your stuff to them and can get the material from them cheaper. I also love the color radiants of their material. It prints like regular pla and i had no issues with the 3 spools i already have here. I sent them around 15kg of waste and spools and this is prevented to get into landfill, so a win win in my books!

[@anthonyrich1592]

As a previous E3D Cyclops customer can't say I'd be interested in the Liqtra multi-nozzle. I'm sure it would work just fine if you're extruding a portion of every filament all the time, to produce colour- or material-blended results, but if you're just switching between filaments periodically you're going to damage the standby filaments by leaving them parked at the operating temperature for extended periods - and this leads to clogging. This is exactly why I stopped using Cyclops in short order, because of the constant clogging and the difficulties unclogging them.

[@julienboucaron9780]

I like a lot this format, straight to the point.

[@metmanik]

Fantastic video! Loved seeing all of the cutting-edge tech, especially the induction heated nozzle!!

[@speedstor]

Best coverage of FORMNEXT. Thank you!

[@jbay088]

I saw a lot of these ideas were prototyped on the old reprap forums back in the 2010's. Amazing to see them in action today.

[@mravx2993]

The Recycling Fabrik looked good, but checking their website the best case offer I can get is 11€ for 5kg clean and sorted PLA/PETG including spools. You can only use up to 25% of your recycling points in a single order and there stuff is rather expensive at 24€/kg for basic black PLA. Recycling the stuff is a good idea, but I don't see this as a good way, not enough incentive for me and with all the shipping needed I doubt it makes a difference in the end for the environment of it ends up in the landfill or gets shipped, molten and shipped again. I'll wait for a good and easy way to recycle at home.

[@patrickchouard5777]

The usual condensate of my German neighbours! Reliable info, kindness, professional grade video... Merci beaucoup Stefan.

[@MichielDeJong56b5g]

The voice crack at +- 9:30 caught me totally off guard 😄

[@petrowolke]

Finally, I waited really long for this video :D Great summary of fdm technologies at Formnext!

[@JoeyBlogs007]

Game changing is that variable nozzle can maintain print quality when required.

[@davidelang]

It will be very interesting to see how the inductive heater interacts with the multi-channel high-flow nozzles. It seems to me that they should interact in a way that produces more then just the sum of their individual benefits.

[@frankwhite2072]

The layer adhesion improvements are impressive.

[@Rotem_S]

Wow! Really looking forward to seeing these technologies implemented in consumer stuff

[@logicalfundy]

Hopefully we can see more recycling of filament available in the future! I think things are looking good for the future - but I also think we should be more realistic about the current state of recycling 3D printing materials, even PLA. Which as it turns out is actually kinda terrible. I've got nowhere to send my waste PLA, and as far as I can tell the only choice for me personally is to trash it. I checked with my local recycling, they won't take any sort of PLA. I don't know anybody in my area with an industrial compost unit suitable for composting it. So I basically have very few options.

[@jakegarrett8109]

Most plastic isn't recycled anyways, even on US military or government spaces the plastic recycling is thrown into the same trash bag as the rest... I was kind of upset when I saw even the aluminum cans getting tossed (otherwise I would have melted them down and recycled them myself in my own castings). So me saving all my bottles up and taking them to work was wasted effort. Unfortunately the DIY options are terrible for the environment if its extruding it back, you end up having huge amounts of manufacturing for parts to save maybe 20 pounds of plastic in your lifetime of wasted plastic, and the machine impact to the environment building it was far more damage. Also I don't print desk toys, so the amount of support material I have is like 0.05 kg per roll absolute max, even when you've got like 100 pounds of plastic its not feasable unless you've got some school or community based group collecting plastic (riding bicycles to go out and collect it, because the instant you drive a car for a few miles that's far more damage than the plastic probably took), it just becomes a scam.

[@oddzc]

Please cover more of these. Love seeing what the future has for 3d printing

[@ronniepirtlejr2606]

That induction nozzle looks like it would be awesome for a soldering pen!!! Able to reach temperatures that could melt solder in 3 - 4 sec. Then cool down in a couple of seconds!👍

[@michaellefrapper5863]

I've watched quite a few of your videos and learned a lot. I did notice though, that, unless mistaken, you don't have data on PC. Is there a reason? Keep up the great work.

[@cyphre]

Induction nozzles are definitely the future of FDM/FFF printing. Once someone has all the software and interaction sorted, it will be so much faster to get prints going.

[@Tedlasman]

You really don't need induction to get fast heat ups.

[@kevinm3751]

For me the holy grail of the industry is getting the extrusion print uniformed, with no layer lines which will yield a stronger part and much easier to finish.

[@brisance]

There are companies that do this. A few of them were even at Formnext.

[@miniman3112]

Great video! Didn't even hear about this trade show before and great to see that there is so much actually new stuff rather than minimal iterations on known designs.

[@petriepretorius4085]

hey Stephan! subscribed just now...i like your videos😀...hello from South Africa...thank you for showing these different approaches...what shoes were those you walked with at the end? i will look through your videos, but please tell me, do you have videos on printing rubber materials? i am especially interested in 3D printed shoes and other apparel...thank you for your videos and channel...

[@CalebThibodeaux-iu2mo]

Most exciting in descending order: INo Trident, QBig, Recycling Fabrik....I do wish they had more filament recycling opportunities in the USA, especially for businesses that print

[@staticred1559]

I think i saw you at formnext. Was the guy sitting there with the VzBot hoody. Really cool to see you wearing the ZellerFeld shoes aswell. Hope to maybe see you again in the future

[@AzaB2C]

Thank you for the overview of new tech. Interesting stuff! Cheers!

[@tammyhollandaise]

It seems like a mechanical iris mechanism would be perfect for variable nozzle width, but you'd need to keep the entire thing fairly hot to prevent it from seizing up from plastic encroachment.

[@memejeff]

This is so freaking cool. I might drop by that convention in the future.

[@tristanpoole2319]

Awesome video! I love seeing the cutting edge to see what the future might bring

[@CNCKitchen]

Glad you enjoyed it!

[@TheNamelessOne12357]

Only heated head for PEEK printing and recycling factory seems interesting and really innovative. Other projects will die soon and never get to the market.

[@The99e]

Regular makers: Oohhh, I don't have enough cooling in my printer's head! APIUM: Let's remove coolers and instal heaters!

[@BigRigCreates]

Considering Microsoft just dissolved thier entire VR department (including Hololens) I hope Fraunhofer finds success with their future endeavors.

[@triblade1669]

This whole video was fascinating, I look forward to more in the future.

[@schizophrenicgaming365]

The heater around the nozzle looks cool. Maybe it would allow a lower chamber temp for ULTEM, running hot enough chamber temps for stable ultem prints really beats up printers, and when its a $329,000 Ssys printer, thats important lol

[@matthewmathis62]

I think the Recycling Fabrik company (in Germany?) would be a really great fit for Schools and Students! Because it would take some of the stress off of the people in the school, knowing that all of the failed and no longer needed prints could be recycled again. And they would have a steady flow of used filament and business for the company! I really think they should seek out a contract with schools, whether across the world or just in their own country.

[@pqr590]

10:38 hole up, are those holes on the print bed preventing the print from warping? Did they mention anything about this? Like do they extrude filament directly down a hole then across to create a hook?

[@brisance]

Those holes are to allow a vacuum pump to create a low pressure area so the print sticks to the build plate. Not a new invention.

[@pqr590]

@@brisance woah, got a link or search keywords? never heard of anything like that before

[@ragnose1]

holo lens for repair jobs giving you exact guides based on the item would be super cool

[@jubb1984]

Dude i really enjoyed this! But most of all, holy crap that induction nozzle, wow im all in as soon as it becomes avaliable, what a gamechanger!

[@drkzilla]

the layer heater is amazing.

[@djornfevrier4799]

Heating filament to ensure better adhesion will take 3d printing much further. However, I wonder if it would be better to use a laser to heat precisely where the next layer will contact as a more efficient way of adhesions improvement.

[@Volvary]

Imagine printing a thing out of grey filament and the print says "3D Print has stopped. Cyan filament needs a refill."

[@andreyansimov5442]

😂😂😂😂😂

[@inuyashacoolieo]

Would it be great to have CMYK nozzles and be able to dynamically mix colors to achieve any color gradient you could possibly need?

[@muffty1337]

MEHR MEHR MEHR! :D Thanks for the good work!

[@ProStandard636]

i personally dont care for multi color prints but the 7 in 1 nozzle is similar to tint machines for paint so i can see that is already a time tested method that will produce results for individuals that want multicolor but dont want to waste filament with excessive purges

[@venoxvsystems]

Recycling Fabrik defiantly sounds the most interesting to me! Will contact them to get a use out of all the 3D printed waste we are producing. Thanks for the great content!

[@m3chanist]

Fraunhofer, the guys that have been fleecing the public one mp3 licence fee at a time since 1987. Long live Ogg Orbis/Opus

[@Its-Just-Zip]

Im hyped for that muti filament nozel. Could probably be used to print support and structure filament without needing a tool change! And yeh that trident hotend is cool too. Kinda wish they could combine the two

[@Vespyro]

The inductive nozzle straight up looks like some kind of sci fi prop and I love it

[@austingarland8242]

Great video! Definitely want to see more. Never heard of foaming filament !

[@stevedonalson5675]

I agree the strain gauge would be a excellent birthday present!😊