I made 1.75 mm Filament from 3 mm Filament!

Подписаться 571 тыс.

Просмотров 412 тыс.

50% 1

🚀Head to squarespace.com/CNCKITCHEN to save 10% off your first purchase of a website or domain using code CNCKITCHEN.
I wanted to find out if I could resize my old 3 mm filament into a modern 1.75 mm filament, which led me onto a journey of making custom multi-color filament with incredible details on the inside. This method also allowed me to create a sample of TPU-Core PLA filament that tremendously improved the impact properties of my printed samples, all made on rather in-expensive equipment. Let's find out more!
Check out our CNC Kitchen products at cnckitchen.store/ or at our global resellers www.cnckitchen.com/reseller
WInFiDEL Sensor: github.com/SasaKaranovic/winf...
Recreator3D: recreator3d.com/
ARMTE3D Filament Extruder: www.artme-3d.de/
PrusaXL Toolchanger(affiliate): geni.us/Prusa-XL
Hart et al, Tough, Additively Manufactured Structures Fabricated with Dual‐Thermoplastic Filaments(purchase): onlinelibrary.wiley.com/doi/1...
Advances in FFF Manufacturing Processes for Improvements in Interlaminar Fracture Properties of AM Polymers(pdf): additivemanufacturingseries.c...
@CNCKitchen PC-Core ABS Video: • PC-Core ABS - WARP-FRE...
@TurboSunShine 3D Print 3D printing filament: • 3D-Print Your Own Fila...
💚 Support me 🙏
Patreon: / cnckitchen
Join as a RU-vid member!
Shop at Matterhackers(US): www.matterhackers.com/?aff=7479
Buy a Bambu Lab printer 🐼: geni.us/BambuP1S
Buy a Prusa printer: geni.us/CNCKPrusa
Shop at SliceEngineering: www.sliceengineering.com?p=rJPWEcsm_
Shop at 3DJake(EU): geni.us/zHvnB
PayPal: www.paypal.me/CNCKitchen
🎙Check out my Podcast with Thomas Sanladerer: / @themeltzone
Follow me on Twitter: / cnc_kitchen
Follow me on Instagram: / cnckitchenyt
Chapters
00:00 Introduction
02:00 3 mm filament to 1.75 mm filament
05:50 WInFiDEL Sensor
06:41 Sponsor
8:15 Using the WInFiDEL Sensor
9:14 Multi-Color Filament
12:50 My Logo in Filament
14:50 Multi-Material Filament (TPU-Core PLA)
16:41 Applications
17:15 Prospect
#3Dprinting #Filament #Engineering
DISCLAIMER: Part of this video was sponsored by Squarespace.
FTC Disclaimer: A percentage of sales is made through Affiliate links

Наука

Опубликовано:

16 май 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 1,1 тыс.

@CNCKitchen 27 дней назад

*QUESTION:* Which material combinations would you like to see and why? Want to get your 3D prints to the next level already today? Check out our Heat Set Inserts and Tools at cnckitchen.store (Free shipping worldwide starting at €100).

@Some-nerd-who-tinkers 26 дней назад

Mix carbon fiber PETG with ninja flex TPU

@eskanderx1027 26 дней назад

ABS + chocolate 😋

@Some-nerd-who-tinkers 26 дней назад

Fiber glass composite pla 😋😋😋

@RENATINHOBR99 26 дней назад

maybe PLA with a core of water soluble support like polydissolve, maybe to do some really light weight prints, insted of solid lines you will get tubes of PLA

@lucasverocai1631 26 дней назад

This process can indeed open a path to multimaterial filament such as continuous carbon/glass fiber core embedded (inside an easy to respool material at first, for test purposes), the non strech fiber mechanical properties might be a hassle to deal with though... PA6/12, PC, TPU or Nylon for high end continuous fiber embedded filament, but might be even trickier to process. Anyway, good luck if you try this. Great video as always !

@timseguine2 24 дня назад

"Yo Dawg, I heard you like layer adhesion problems. So I put layers in your filament so you can have layer adhesion problems while you're having layer adhesion problems."

@ericwheelhouse4371 24 дня назад

You are having adhesion problems with pla?

@timseguine2 24 дня назад

@@ericwheelhouse4371 14:28

@djordjezivic2481 23 дня назад

@@ericwheelhouse4371 never under estimate a bad printer (my 2018 wanhao duplicator i3)

@stevrgrs 4 дня назад

So basically you’re doing what candy makers have done for over 100 years :P 😂

@mannycrafts 26 дней назад

Wow, this is insane. Mans maxed out his engineering level and just grinding sidequests now.

@Some-nerd-who-tinkers 26 дней назад

He’s completed the CNC part of his username and will soon begin the Kitchen stage. Edit: tbh he’s already cooking

@hyozanhades09 26 дней назад

He is manufacturing a new reality for earth in his kitchen !!!

@ameliabuns4058 26 дней назад

Lol

@drummerboymaddux 26 дней назад

😂😂

@brandonsaffell4100 26 дней назад

If you think our man has reached his final form you underestimate him.

@dittot 26 дней назад

Roughly every year or so, someone makes a completely game-changing 3D printing video showcasing an inventive new way of doing things which could open up so many new possibilities. This is one of those.

@StarkRG 26 дней назад

And at least a third of those seem to be done by CNC Kitchen. How many of the things Stephan has showcased over the years have become standard practice?

@TD-er 24 дня назад

Yep I was wondering which 3D printer manufacturer is also watching this and thinking to add a filament-diameter scanner into the printhead to be able to automatically compensate for under/over extrusion during printing. Maybe this is even more important for flexible filaments to get a really consistent printing results?

@givemeanameman1 24 дня назад

Its interesting, but its already being done... Continuous Carbon Fiber filaments for high strength parts for example. "fiber" filaments rarely have increased strength, because the fibers have to be chopped up so small that they don't do much. So Continuous Carbon Fiber filament and the like were invented to change this. The game changer is being able to make multifilament at home, even as a proof of concept.

@whatevernamegoeshere3644 26 дней назад

I work maintenance in a cable factory. The first 5 minutes of the video were pretty much most accessories of an extruder re-invented lol. You should really look up Kabmak extruders to get some inspirations because there are things like vacuum attachments and straightening rollers that could be added even to your machines. You could also add a mechanical brake to the pay-off spool to add pre-tensioning and it would make the plastic more consistent as it would feed through straight. The rollers serve the same purpose, but for wobbly lines. Another important addition would be a hot air blower to pre-heat the filament so you couldn't have to run a volcano type nozzle or anything special. You would need a lot less forces on that filament if it went into the nozzle already at say 50C. As for what you could be adding to it? Oh boy! Make 3 separate filament pay-offs with U-shaped "shells" on 2 of them and one filler. You could just add nylon strings or fishing line to the center spool and print multiple times as much filament at once. Hell, add a caterpillar-type tensioner brake to it and you're gonna have time to change filament on the go without interruption if you find a way to weld them in between.

@jakeharms1386 26 дней назад

Thank you so much. This is exactly what I wish every comment on RU-vid was like

@shawnalfaro6943 25 дней назад

I agree with all of these suggestions! Preheating the filament is a great idea, even with something simple as a halogen light bulb. And the roller suggestion is also great!

@audioman81 25 дней назад

Preheat the filament too was first thing I thought when he was struggling to pull it through too. Can't believe he didn't think of that when he was basically already doing that to stretch down in size to insert it.

@bastienx8 25 дней назад

Just putting a hot air blower or halogen lamp at the entry is not very energy efficient, for a process that takes hours this is something to consider

@sementhrower420 25 дней назад

Off topic, but I think you might be the right person to ask this, if you don't mind helping out a random internet stranger :D I'm working on creating coaxial nylon-nichrome wires where I want to embed a nichrome wire in the core of a nylon monofilament line. The ultimate goal is to achieve this with 0.1mm D nylon and 0.01mm D nichrome wire, but I'll first try to do it with larger D nylon. What Stephan built here is roughly what I am also planning on doing, and in addition also feeding the nichrome wire through the core of the nozzle. Do you think this would be workable and do you have any tips? Thanks in advance!

@OldCurmudgeon3DP 26 дней назад

Hard candy is made in a similar fashion. All the design is created in a large (8-9" diameter) chunk then stretched into the final bite-size form. The pattern is retained through the stretching process same as with yours.

@EFLO3D 26 дней назад

Same with “millefiori” glass art.

@benjaminvdvyt 26 дней назад

This was the first thing that came to mind. Watching how candy is made, is extremely similar and follow the same principles.

@OG-ProfessorFarnsworth 26 дней назад

His old video about the PC core ABS he mentioned actually talks about the same thing. I believe the original researchers made large blanks with the desired pattern that they then had a machine to extrude into a filament. Exactly what you’re thinking! But requires specialized equipment. Assuming I’m remembering correctly! 😅

@wakafeek 26 дней назад

Beat me to it! I was about to say this is how they do designs in saltwater taffy too

@dooleve 25 дней назад

Funnily enough, this is mentioned in the subtitles at 13:58, but he doesn't say it out loud

@lescarneiro 26 дней назад

This TPU core experiment is just GENIUS! That's why I love your channel, you do science with your experiments, not just funny things for likes and subs

@danilolattaro 25 дней назад

Absolutely genius!

@zackj997 25 дней назад

Why a solid core instead of the TPU and PLA emulsified together? People already use silk PLA for flexibility in certain applications since it already has TPU in it.

@rich1051414 24 дня назад

@@zackj997 The solid core unmixed turns it into a composite. When you have two materials with different properties together, their strengths can add together in ways that wouldn't if they were thoroughly mixed. In this case, the flexibility of the TPU functions like dampening rebar, preventing fracture propagation while preserving the stiffness that PLA offers.

@ronnetgrazer362 24 дня назад

@@zackj997 Really? Most of my silk prints seem more brittle, not less. I'm a sucker for off-brand budget filament deals so that might be a factor.

@kbee225 24 дня назад

It sounds genius if you know very little polymer science. PU and PLA are not chemically similar so they form what we call non-compatible blends. These blends are basically those that cause boundary layer separation because the two materials are not chemically bonding with each other, this forms a weak material that is worse in most aspects than the homopolymers themself. This is why when making polymers blends with dissimilar materials we use compatibilizers to act as a glue and bind both the materials together.

@ac281201 26 дней назад

4:13 This phenomenon is actually a result of two combined effects: necking and strain hardening. When tension is applied to the nylon filament, it begins to undergo plastic deformation at its weaker points, leading to a reduction in diameter. At the same time, the nylon string strengthens in these areas of reduced thickness, which concentrates the strain on the thicker segments of the string. The combination of these effects causes the string to shrink to a new, constant diameter before ultimately breaking. Articles for more information: en.wikipedia.org/wiki/Necking_(engineering) en.wikipedia.org/wiki/Work_hardening

@miqo85 26 дней назад

aka continuous necking

@hugofernandez8522 26 дней назад

It's kind of right but not quite, the effect is due to the majority of the chains in the polimer getting aligned and because all the chains are in the same orientation they become stronger

@hugofernandez8522 26 дней назад

In amorfous materials like polymers you don't have strain hardening like in metallic materials

@ac281201 26 дней назад

@@hugofernandez8522 Yes, you are correct, in the case of polymers this effect is the result of chain alignment and not crystal shifts like in metals, but still, this effect is called strain hardening (or work hardening) in both cases

@louisvaught2495 26 дней назад

As others have mentioned, this is not work hardening, it's chain alignment. No, they are not the same thing. Work hardening is a crystallographic behavior (polymers do have crystal structure) while chain alignment is just generally the idea that you can do things to the material that cause the long molecules to be oriented in roughly the same direction. Chain alignment doesn't require work-hardening because polymers are viscous and have huge molecules. Things like melt-spinning can also cause higher chain alignment. Chain alignment also doesn't have to interact with the crystal structure of the plastic, and happens even in amorphous materials. It's just about the average direction the polymer chains are oriented.

@tomallo99 26 дней назад

That's insane, really, creathing a visible logo INSIDE of a filament spool, with hardware that's DIY and accessible to a hobbyist? Man, you just keep on delivering bangers, your ingenuity is amazing

@AndrewAHayes 26 дней назад

This is why I love this channel, most of the other channels I used to watch are either all doing Voron builds or reviewing the same printer that's been done a hundred times already. This channel is unique!

@cfeigel 25 дней назад

The WInFiDEL sensor lets you measure filament diameter. Now you can implement a PID loop to automatically figure out the proper temperature at a given speed. If you want faster production, turn up the speed and the PID should correct for the change.

@XVRickXV 26 дней назад

You could think of the TPU as muscle and the PLA as bone and have them switch places. The tpu absorbing more impact on the outside and the PLA receiving less shock because of being shielded by the flexible TPU the same way that flesh protects bones most of the time. Awesome experiment!

@lickytime9683 18 дней назад

The outside of the filament would also be bending more than the core, so having the outside made of tpu must be beneficial too

@kylebuffington7673 25 дней назад

So many new ideas continue to pop up in 3D printing. Non-planar printing, arc overhangs, and now you are showing off multi-material filaments. Ten years from now, 3D printing is going to be absolutely off the charts.

@not2unknown1 26 дней назад

A PLA core with a water soluble PVA mantle could create interesting structures or grids when you print it and put it in water. Kind of like how aerogel is made, but bigger.

@ziocrielo6148 26 дней назад

3d printed sponge lol

@paulpoleon8570 26 дней назад

Aero light plastic for rc plane wings or something

@ericbuchner2982 26 дней назад

Unfortunately with the constant cross-section shown in the video I don't think this would give useable results. The core never bonds to itself, so if you dissolved the outer layer the entire print would just fall apart. It might work if you could vary the cross-section so the core sticks out in places, but that would be much harder to get working.

@markswayne6326 26 дней назад

If you printed it with stripes of PVA that are diagonal edge to edge but left solid PLA layers between, the PVA might be able to dissolve out while leaving behind a structure that wouldn’t come apart.

@lukesmith9059 26 дней назад

I would love to see more videos on metamaterials! If the stiffness of the tpu-pla is close to normal pla it would truly be the king of all printing materials for parts that don't need high temperature resistance.

@Avets610 26 дней назад

Always pushing the limits of 3d printing, great job. The watermark filament honestly blew my mind.

@TurboSunShine 26 дней назад

Oh god i was so young back then... excellent technique! love the 4mm to 1.75 downsizing!

@FTBT3D 26 дней назад

That TPU/PLA is so cool! what a great experiment

@MarcStollmeyer 23 дня назад

Embedding your logo in the filament is such a flex and extra way of tagging your prints as genuine.

@capslfern2555 23 дня назад

I love that, watermarked 3D prints

@lucianoag999 22 дня назад

Except that everyone can do it.

@domkri9502 23 дня назад

Every time you publish a Video it takes two days and your content is featured by all the 3D printing/ Maker Websites, this is amazing. Thanks for your R&D work and making it open to use for everyone Danke 🎉

@SamChaneyProductions 24 дня назад

This is one of the coolest advancements in consumer 3D printing tech I've seen in a long time. What a great innovation. Even as a mechanical engineer I'm a little surprised how well you got this to work with such a simple setup, especially getting such disparate polymers into a single filament!

@arcrad 26 дней назад

Dude you are the GOAT of 3d printing experiments. Is there anyone else out there doing stuff as cool?

@loganluckless372 26 дней назад

I work at a company called Hills inc. where we do cross section logo fibers and other wild multi extrusion projects. Cross section logo fibers like that are used a decent amount in industry by basically making a dot matrix on the core of each fiber and routing the colored polymer to it's place in the matrix.

@janbeck8269 25 дней назад

How about filaments with an embedded cf or Kevlar strand. Is that done?

@properprinting 26 дней назад

Man, this is genius! The most interesting use case I've seen for the Prusa XL and this really inspires!

@swissfreek 26 дней назад

Your videos are always amazingly thought-provoking. You come up with truly innovative concepts for investigation that no one (or very few) have talked about. I love it.

@thomasleftwite 24 дня назад

You are a pioneer in expanding the possibilities for 3D printer users.

@skelliton_67 24 дня назад

The nylon string reducing in diameter when tensile force is applied is called "necking". I got this definition from google, "In engineering and materials science, necking is a mode of tensile deformation where relatively large amounts of strain localize disproportionately in a small region of the material. The resulting prominent decrease in local cross-sectional area provides the basis for the name neck."

@TheToelle 26 дней назад

A CNC-Kitchen Video 🎉 my Evening is saved.. Why my evening? Because each one of them teaches me enough to continue reading for hours… thank you!

@supercurioTube 26 дней назад

This is absolutely amazing, I'm so impressed with what you came up with, so creative and well engineered at the same time. You ended on what you would try differently after exploring the reforming method and I can't wait for the next step.

@peterkiss1204 26 дней назад

I would drill that nozzle up to at least 1,8-1,9mm and pull the filament at above the breakpoint of the diameter/pulling force curve to achieve correct diameter and fuse the layers together properly. Also a loadcell controlled motor driver circuit would help keeping the pulling force constant.

@MrTree421 26 дней назад

You have really outdone yourself with this video. The research you have done in this video is easily enough to write another master thesis. Outstanding!

@justintoleos 22 дня назад

wow. packed with so many amazing concepts. Thank you CNC Kitchen!

@greenboy3d 26 дней назад

What a coincidence that we both made a video about mixing TPU with PLA at the same time hahaha 😅 But I was a bit faster 🙃

@Craftlngo 26 дней назад

Upvote for more awareness. Your idea to mount a corkscrew extruder on a 3D printer could be a real game changer!

@mr.shplorb662 26 дней назад

Not to brag or anything

@csforesman 25 дней назад

Wow. So glad I saw this comment and went to check out your channel. As cool as the idea in this CNC kitchen video is (and no slight to Stefan, this really is a great idea), I think your pellet extruder has way more potential to revolutionize 3d printing. Amazing work.

@Nachtschicht1 25 дней назад

I've recently seen your video about that and I think you deserve a lot more attention. What would you think about about combining your idea of direct printing from pellets with Stephan's filament-extruder and Thomas' thickness-sensor to regulate the speed of the extruder to match the amount of filament that the printer needs to build a printer which makes its own filament on the fly? That would solve the problems with the much heavier printhead and reduced printing-quality.

@greenboy3d 24 дня назад

I think this idea might work, there are also ideas like implementing a real-time pressure sensor or AI camera to measure the flow and to automatically adjust it in real time. The only thing that needs to be done is the research & development which is costly and since I have spent most of my savings on R&D for the extruder itself... For this reason I keep all these things in mind but for now focus on releasing the extruder so everyone can benefit from it... 🙂

@DrakeTain 26 дней назад

Now that is neat.

@fearlessmangoose3118 26 дней назад

Amazing proof of concept. I love the macro shots in this video !

@wruehl 26 дней назад

Love to watch you push the envelope in a meaningful way!

@jkachele 26 дней назад

Hexagons are the best-agons! CGP Grey Reference!!!

@startedtech 26 дней назад

If its ever sold that TPU/PLA combo should be named Wagyu beef!

@Dwonis 25 дней назад

Having a flexible core and a hard surface is what makes teeth so tough... so it could be called Wagyu Teeth! 😂

@Bob-qr9se 26 дней назад

Congrats on reaching the next level in 3D printing! Love your ingenuity ❤

@mikepujols 26 дней назад

This is some amazing stuff!! Just fills my head with sooo many ideas! Thank you so much for spreading your insights! theres still so much to learn!

@martinsmith2948 26 дней назад

Babe wake up! CNC Kitchen just uploaded

@TheOneAndOnlySatan 26 дней назад

And again Stephan changed the 3D printing world again! What a legend!

@Alluvian567 24 дня назад

This is so cool. So glad you did this, as I do not have the equipment, expertise, or time to do something like this. Amazing.

@majorredbeard 25 дней назад

The amount of time that you put into these videos is truly astounding. Thank you so much for all of the dedication you have to 3D Printing!

@sleeptyper 26 дней назад

I have an idea. Make the filament have a clear core with transparent coloured shell, print a cool vase model on vase mode and find a way to send light thru the extruded filament. Maybe one of those 60mm LED pucks from eBay under the vase would do it. On the other hand, a black core with transparent shell could be very interesting as well.

@ouansungyidan 26 дней назад

Omg he made his own metamaterial at home. Kind of freaking out right now. That's a research gold mine.

@louisvaught2495 26 дней назад

It's not particularly useful due to the high shear during production. That imparts unfavorable structure on the material.

@ouansungyidan 26 дней назад

@louisvaught2495 That's a great point, the production method can be improved. But the concept is still amazing. Hobbyist accessible metamaterials. That's still got me excited.

@louisvaught2495 26 дней назад

@@ouansungyidan You can work a bit to remove the molecular alignment, but in general the process being used to *make* the structure is what limits the final properties. This particular process being so accessible and macro-scale means you don't have much molecular control over what's coming out. The part of the video where Stefan discusses having to keep the filament from getting too soft is a great indication that the process is really dependent on the molecular order of the polymer, rather than the process having any control over it.

@EXAPHI 25 дней назад

Keep innovating Stefan, you're one of the main drivers helping to push open source additive manufacturing towards the future

@spacedbro 25 дней назад

Legitimately amazing work as usual!!

@sephrosemary 26 дней назад

Imagine finding a way to embed continious carbon fiber in a filament this way!

@UnCoolDad 26 дней назад

This exists already in the high end commercial printer world.

@olafschermann1592 26 дней назад

Yeah, thats the way! And opensource it

@stevvieb 26 дней назад

You got 4 halfs, I got 4 quarters, :)

@Markfps 25 дней назад

What a crazy idea PLA + TPU core, amazing job man! This is surely a neat improvement for prints that will face a lot of physical stress

@mckesn 26 дней назад

Every topic is wonderful and incredible, I really enjoy your videos, they give me ideas on many things, thank you.

@ChrisHarmon1 26 дней назад

The wilder the hair gets, the better the engineering?

@Bbluenight 24 дня назад

mind blowing, very cool tests! keep up the good work and thank you for sharing :)

@evilratchet777 24 дня назад

Extrusion process engineer here. The phenomenon where you can stretch hot plastic is known as "drawdown." That's also the name of the process you are using. The simple explanation is that this phenomenon occurs due to internal tensions pulling material from the "corners" of the part to fill in the middle, where the material is splitting under tension. It helps to visualize it as a continuous landslide from the hilltops into a valley that keeps growing longer. You can also get something known as "die swell" as plastic expands due to the pressure drop at the die openings. Die swell isn't really something we have to consider with 3d printers, but it should be considered if you are extruding filament with an Archimedes type extruder. As for your filament layer bonding problems, you may be able to solve that by preheating the filament before drawing it down. Also try over-extruding your print by 3-5%, this should help layer bondability. Also, tension is everything. Pre-tensioning will help both the bondability, and help keep the filament from rotating during drawdown. The more aligned and balanced the tension is on either side of the nozzle, the more consistent the final filament turns out. Good luck, and keep up the amazing videos! "Like everything else in life, 3d printing is just a primitive, degenerate form of extruding." -Bender

@falxonPSN 25 дней назад

This is quite possibly the coolest video you have ever made, and that's saying a lot! Wow!

@farfadet46 23 дня назад

Wow amazing work here ! thank you so mush !

@sapuseven 25 дней назад

I love the amount of innovation and experimentation in videos like this.

@willofthemaker 26 дней назад

Yoooooo this is amazing. So many possibilities! Can even make longer rolls by fusing multiple coils together by melting hem together. Then the resizer does it's magic to smooth out the joint

@capslfern2555 23 дня назад

im going to try this, looks cool

@GabrielAmyot 24 дня назад

Thanks for the awesome research

@dgriff4000 26 дней назад

Outstanding research. Bravo!

@jakubruzicka1686 23 дня назад

Such a cool and unique idea. Well done.

@jeffharrison5265 25 дней назад

That was super interesting! I think you're onto something here with the TUP/PLA. Hope you pursue this further and provide some updates. Thanks.

@357Maxim 11 дней назад

I really like your videos and the R&D-oriented mindset. Great engineering !

@beonyou 25 дней назад

Clever research ! Multi-material point is brillant ! 👍

@orephen 25 дней назад

Super intresting thankyou for the hard work.

@elongatedmuskrat5170 23 дня назад

This effect is called necking. It comes from the alignment of polymer chains. The modulus of elasticity of the material also greatly increases when necking occurs as the aligned chains creates higher crystallinity. This can also occur in multiple steps of necking down the diameter until the stress required to force the diameter down via aligning the chains further is greater than the yield stress of the filament at that point. PS: as a polymer engineering student, i love your videos.

@UnexpectedMaker 26 дней назад

This was super cool. Great perseverance to keep at it until you got each combo to a workable level.

@benrr101 24 дня назад

This is pretty cool! It's basically the same process confectioners use to make candies with logos and stuff in them, although they start with blanks like 10" in diameter and stretch them down by hand. Still very cool that this technique applies to plastics, too

@MrDivinePotato 26 дней назад

Very cool, that TPU core PLA is awesome

@CDRaff 25 дней назад

I really like the twisted multi-color filament.

@garagemonkeysan 26 дней назад

Excellent research. Fascinating! Mahalo for sharing! ❤

@mattelder1971 24 дня назад

I would love to try some of the TPU filled PLA to see how well it works in some unusual applications. It almost sounds like the ideal material for high impact prints.

@jonbondy 25 дней назад

Wonderful and amazing innovation and creativity! Kudos!

@SixOThree 26 дней назад

I don't have any suggestions but I can say this has been fun. Hopefully you will do a little bit more of this!

@charleseast2740 23 дня назад

stephan, this is phenomenal, I've been thinking about a way to get around the markforged patents for a while. I consistently enjoy watching your videos, i really like how thorough you are.

@dalerogers1134 25 дней назад

Impressive! Excellent work.

@HerbanWarrior 24 дня назад

That twisted 2 color where the colors shift is pretty awesome, that effect with another color could be really cool

@BakeBakePi 25 дней назад

Thats so cool! Great video!

@ericserafim7954 25 дней назад

What a intense video. Great job dude 😎

@Greg-J 23 дня назад

This is probably the most impactful 3d printing video of the year and and it's just chilling in our feeds.

@jacobhgoldman 25 дней назад

I love the update with an older experiment I think it would be cool to pull long strands of each material and line them up to form a pattern as a practical mass production setting. Also I think the thinning effect you talked about in the beginning is called strain elongation

@MrBlakBunny 26 дней назад

that filament sensor is awesome, i need to get one for my filament making machine when i get around to it

@jan_harald 24 дня назад

I think one interesting way to use this, is with multi-extrusion/dual-nozzle printers, themselves, printing a multi-layer spool as the nozzles are fixed, extruding from both, would mean the base printed spool would already have a changing pattern when printed with, but also, it should probably help with metamaterials, as you can have each material as their own perfect temp, without letting the other material cool down, both the changing position, not being in perfectly straight layers, and having both of them be hot while laid down, should greatly decrease the risk of delaminating, imho

@m.frohlich2651 26 дней назад

Simply insane what possibilities it opens to combine different materials with different specs exactly into one product… 😮

@klazzera 22 дня назад

the phenomenon is yielding and chain alignment. when it stretches to the point that polymer chains are fully aligned, it reaches a higher modulus and strength and stops being the weak point so the thicker sections continue to stretch

@ampex189 25 дней назад

That TPU core is a great idea!

@jetblackstar 24 дня назад

This is just like a stick of rock, and how a lot of polymer clay art works. Very cool. Especially from a cottage industry researcher! The tpu/pla matrix blew my mind.

@Betruet 25 дней назад

TPU core, amazing!

@CatMan36 День назад

4:27 The phenomenon is based on the crystallization of thermoplastics. To summarize: when a thermoplastic is pulled apart, the polymer chains in it lie next to each other, making the thermoplastic stronger, as more intermolecular attractive forces can be formed. As a result the crystalline part of the thermoplastic isn‘t pulled apart, but the weaker non-stretched gets stretched. Have a look here: de.wikipedia.org/wiki/Kristallisation_(Polymer)

@TrippyRiddimKid 24 дня назад

I recommended you do this a while back, not sure if you saw my comment or not, but Im glad some testing is being done, I dont have the equipment to do it myself.

@dalbyte 26 дней назад

you are mega innovative and completely out of intrinsic motivation it is very enjoyable to watch your videos

@TheRealPlato 26 дней назад

Thanks for sharing! Nice research!

@ZILLION4EVER 25 дней назад

wow one of you best ideas in the last years ;) talking about creativity and thinking outside of the (spool) box :D

@mikescholz6429 24 дня назад

Ill have to look up when I get home, but theres an open source repo for an optical filament width sensor with 3 mirrors in a half hexagon configuration because you really need at least 3 different cross sections to get an accurate filament volume because roundness matters (if you want irresponsible accuracy)

@ZeFoxii 25 дней назад

For the layer adhesion issues why not pull it twice once to get the diameter and then again at a higher speed and hotter temp just to make sure it fused together.