3D Printing Resistors, Fibers & Coffee - Utility Research Lab
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- čas přidán 22. 05. 2024
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3D printing with spent coffee grounds, 3D prints with an internal resistor network for multi-point sensing and bio fiber spinning were some incredible projects that I found at the Rocky Mountain RepRap Festival 2023 in Loveland, Colorado. The Utility Research Lab of the ATLAS Institute from the University of Colorado Boulder had a booth there and displayed some of their impressive projects to the public.
Utility Research Lab: utilityresearchlab.org/
Paper on printing Spent Coffee Grounds: utilityresearchlab.org/assets...
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Chapters:
00:00 Introduction
01:16 3D Printing With Spent Coffee Grounds
03:52 Touch Sensitive 3D Prints
06:30 Gelatine Fibers
#3Dprinting #rmrrf #science
DISCLAIMER: Part of this video was sponsored by VoxelPLA.
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the fiber spinning machine was very interesting, not too long ago I was thinking back to a TED talk I think where a scientist described synthesizing spider silk protein and the way it can sort of self assemble from a liquid. this feels very similar and makes me want to learn more
Really like the possibilities for the future of printing materials. Being able to effectively recycle is always a plus.
Awesome video; maybe we should look into making coffee ground filament too; the conductive filament for sensors is so cool!
Love the focus on recycled/reuseable filaments. More please.
You've got to be kidding me! I live 20 minutes from Loveland and I had no idea this happened. What a bummer.
The biofiber reminds me of milk cotton they used to make! They changed the starting ingredient and used non-commercial machinery!
it so incredible. I even not Imagine how it smels after printing
I always thought those conducting filaments suck at conducting electricity, but could shine as sensors, because their conductivity is related to pressure, bending etc.
Yes I’d agree. What I’d really want is a conductive flexible filament, so you can easily make compliant shapes where you can measure how much they’ve deformed. Though one issue with using carbon is it gets a non-trivial temperature coefficient, which you’ll care about if you’re not using a thermally coupled materially homogenous Wheatstone bridge.
I had assumed they'd be most useful for signalling where they're not passing much current at all. The sensor applications seem to be very challenging because there are so many ways the resistance can change outside of the one being measured (ie heat or wear impacting the resistance of a part that's trying to sense pressure)
@@cian.horgan temperature is something you can compensate for, and if you embed the conductive filament within non-conductive TPU or whatever, you should end up with a wear and impact resistant material.
Though analogue capacitive sensors (be they for touch, proximity, or in place of a strain gauge) are probably still going to be more reliable with this method.
the gelatin one caught me off guard, but its a neat idea, i want to see how good the fabric is when made from this stuff
Oooooo I like the coffee filament idea. Imagine partnering with local coffee shops to use their biproduct and reuse it before it gets thrown away
Very cool to see you mention tom Lauerman. I had him as a teacher, and even have a mug from the clay printer. Was a highlight of the class.
Makerspace Scale Fiber Production is AMAZING !
With stuff like that adapted to @The Thought Emporium's Spidersilk, or Rayon, etc...
Printing resistor networks is awesome... itll be really nice
5:30 this is the best application for an idex printer ever
coffee ground support material must smell amazing!
I really like the idea of having the ability to reuse what is basically waste material for support structures as support material is generally seen as 100% waste after printing.
This was a really great video! Thank you for providing such a great explanation of the different displays!
I coordinate with the university of Boulder Colorado on AM research and have been thoroughly impressed with their students and academics. Especially David Prawdle's students and his teams work on insitu process monitoring for polymer AM
SOOOOOOOOOOOO Im happy with my machine, AND i just stocked up on filament..... so i split the difference and bought an IDEX
Heeeeey I get to say I was there for once. Everyone there was so nice and so excited to talk about their projects. If there's a 3D printing event happening near you I recommend checking it out.
The resister idea seems interesting and useful but I don't know if the other two ideas will have any value. In fact, I think they'd do more harm than good because both used coffee grounds and gelatin have other important uses and creating a new demand for them would just make other important stuff more expensive. It would also cost gardeners a cheap or free source of organic matter that I also think helps acidify soil.
The idea that I think has the most value was one you mentioned doing before and that is using a 3D printer to print things out of clay. This is useful for a number of reasons. Clay is nearly limitless, its recyclable, and there's a huge amount that's just not used because its of a lower grade and not worth the risk damaging kilns and other pottery from explosions. If you could 3d print things out of clay and refractory, you'd be able to massively reduce the cost of pottery. One thing that needs to be figured out is how to incorporate grog(intentionally made or from failed parts) into new parts. The printing system doesn't have to be perfect for clay since simple modifications after the printing process can fix imperfections.
Amazing!
Very nice video! I really like videos like this. Keep 'em coming .
this video is good!
Really good watch thank you. I'd be down to see an Apollo computer print with conducting material and dissolvable supports.
How did I not know about this event? I would have went there and probably met you. I would have been so cool
I regret not really checking out these tables. I go to *RRFs to check stuff out and to meetup with people, and then I keep finding videos where people go "check out this table" and I go "wait, the table that looked like they printed 30 benchies in different colors and nothing more was actually demonstrating some fancy manufacturing technique?!" Thank you for covering them, because I keep missing them.
Also, that force sensor would make Adrian Bowyer happy. I remember when he went to ERRF 2019 and at some point, maybe it was his keynote speech or the multiple interviews he gave, he was asked "what's something you're most disappointed in?" and he said something along the lines of "I'm disappointed there isn't more printed circuitry ... with all the paths going through the structure of the print" and here we have someone who isn't just doing that, they're doing it in a way that expands past "this is a wire" and into "this serves a purpose"
Also, I'll note that the biofiber printer was stationary basically every time I walked past it (I tried to do laps every hour or 2), so I thought it was basically filled filament as opposed to what they actually were showing. So it was one of the "not sure what this is, moving on" tables. Next time...
Clay and grounded coffee!
Very nice application of conductive Filament. 😃
I wish there was conductive filament with such a low resistance so that it is suitable for wiring components that are print in place.
That’ll be great since I don’t like soldering and would rather like to print my circuit boards 😊
Maybe one could print with slightly conductive filament and then electroplate it for conductivity
Our common 3D printers are designed to print plastic or other material that melt at that temperature, we will never have 100% metal filaments and the conductivity will never be as good as a real wire. There might be other solutions, but I think the old wire + solder method is the easiest for now
Even if you printed the circuit boards, how are you going to attach the components?
You build a good clay and refractory 3D printer and you'll save millions of lives.
Can’t belive I missed this. It was literally an hour away from me, and I had no idea it was going on till I started seeing videos about it :(
For compostable material, I’d use cellophane and a plasticizer.
The suggested use case for the gelatin fibers seems pretty far fetched to me. Wearables that dissolve in hot water seem very limited.
0:10 whoop whoop * whistle * * whistle * * whistle * here Nero3D comes
Nice video.
But i have one question. How do you wash water soluble smart clothes?
yo, cnc kitcken. i think there is 2 vids in ur strength tests playlist that souldn't be there :p
Shit, you're right. Thanks!
@@CNCKitchen Watch yo profanity.
@@CNCKitchen For Deutsch speakers: scheiße 😁
@@shazam6274 truely
I wonder if printing cement could be done smaller then the huge house 3d printers
easily.
Where's the benefit?
Drone swarms
Yes.
…But then you couldn’t print huge parts the size of a house. That’s what they’re for; so that’s why they’re so big.
Bc of how cement pours and that it has other stuff (sand etc) often it can’t print nearly as fine as many other thing. However, yes. Printing big lowers construction cost more, human assembly, transport, and devices needed. However, smaller is more portable and could be used for smaller modular pieces (like cement blocks), custom blocks, etc.
Thanks for the video. I want to print plastic auto parts. What is your recommendation for filaments that are resistant to sun, rain and outdoor environments for a long time?
The holy grail would be a "real 3d printed" circuit
Im trying to think if uses for a fiber that disilves in warm water. The only thing that immediately comes to mind us bandages. You dont want your bandage to also be a bacterial griwth medium though.
Sko buffs!
Hi!
I would be very interested to see your reporting on the voron 0.1 printers described in the research article Additive Manufacturing
Volume 71, 5 June 2023, 103604
MEWron: An open-source melt electrowriting platform. An EPFL news article titled "Open-Source MEWron Device Unleashes New Possibilities in 3D Printing" states that there are 4 such printers "available" on the EPFL campus in Lausanne.
Can that biofiber be used to make a meat sweater?
I had this idea for a Resin Printer:
Basically, you could get a Clean (or somewhat clean) Resin Print to come out of the Resin Printer, if you had a Gravity Feeder on the Resin bottle which only lets a small amount of resin onto the vat at one time, so that when the Layer is Cured on the Print, your model is not submerged in liquid, which could result in a clean Print, or at least much cleaner print.
The only downside to this is that you would need to make sure that the Resin fills the Vat fully before your model is set back down for each layer.
Also, the pressure of the depth of the resin normally pushes away air bubbles, which helps your print to not have air bubbles in the layers.
With this suggested technique, you would need to make sure that wouldn't be a problem.
But I'm sure that it's very possible to get completely clean and cured resin prints, straight off the build plate, just like FDM Printers have.
Peristaltic pump that doses the amount of resin used in the previous later before the next later is exposed might do the strick. You'd need to know the volume but I imagine that's not too difficult to calculate from the gcode
I went to C U Boulder.
Nice 👍
The meat based fibre could be used as a degradable packing material.
3:10 is that.... the quixotic medallion?
Yes
well, I guess the rocky mountains are pretty high
You skipped MRRF?
Animal-based fabric, vegans are gonna love it
Gelatine shirts are the new leather jackets!
Your voice is awesome, its like "Nik Kottmann"'s channel voice
Kraylin 3D 🤌👍
I don´t see really a new great solutions here. I know a Germany company which makes plastics from wood (lignin) this is a great idea, much better than coffee ground which is ...yeah I mean.... just use the wood plastics xD
The two benefits demonstrated there are eliminating plastic from the material entirely (not sure if you meant they made a lignin based filament or used it as an additive) and that it's made from mostly waste products with an additive instead of mostly new material
@@skybloo16 Yeah so does the wood derived plastics as well AND it has some structural rigidity which the coffee ground does not provide. They also made ligning based filament which you can buy. It´s also bio degradable, it´s basically 100% eco friendly. I am telling you that stuff is spectacular.
Also pyrolyses plastics are interesting. It´s chemically recycled plastics, 100% recycled and has 100% the same material properties unlike all the other recycled stuff.
Water-soluble cloth made from a byproduct of the meat industry. Even in the stated use case, it sounds like a hard sell for consumers...
soon the time will come when all electronics would be 3d printed
I can't wait for that day
Please use some more drawings to make this more clear. A picture says more than a 1000 words
1. Printing with coffee.
A great way to print plant-pots. But pressing them is a thousands times as fast. Good research, but it's again more of the "lets see if we can force a 3D-printer into this process" and not "I have an idea that needs a 3D-printer".
2. Touch sensitive structures.
Vdey interesting. NBo clue what the usecase is. Also no clue why she isn't using a multi-filament printer, or a disgn where she can insert the resistors lateron and snap the parets together, you k now, like we all do in our designs. Again, very much a " I have an idea, now how can I force a 3D-prkinter into it?" thing.
3. Making fibers.
Yes, this is how they mkae fibers. It's interesting to see her doing it on a small scale, but yes this is how they have been making fibers for...well as long as they have been making them.
This is really pushing the "it uses a 3D-printer" factor because it literally only needs the nozzle.
All in all I get a _very_ strong feeling that a lot of companies have noticed that an increading number of people just turn off their brains when they see a 3D-printer and start accepting any bullsh*t they are fed as magic *because* it involves a 3D-printer.
I think the point of those projects is to find ways to re-use different materials (coffee grounds and gelatin) that would otherwise get thrown away, thus reducing the amount of waste and recycling them for other applications. They are exploring these ideas and seeing if it's feasible to do this, and the printers are just a means to do that.
Running a 3D printer to recycle your coffee grounds into useless shapes that you can crumble and use as fertilizer.
All our ecological catastrophes will soon be solved
If I am honest I am not very impressed by projects you shown. They are quite interesting but not very practical nor efficient.
If you wanna save the planet just stop printing junk.
If you want conduct electricity through the print just design place to put components and cables, make pause while printing and put them there or design stuff that way you can put them later. Also high resistance means a lot of heat while dealing with any significant current, so it would be just for data too. What's more such resistor wouldn't be very stable I bet.
Fibers may have some potential but it's just a prototype of machine some may use in industry. Rather barely one would use it in small scale. Also gelatin is not a waste, it's being used in many applications.
I was thinking about buying 3D printer for a long time and every time I saw video on youtube why should I buy one it was
-you can print parts for your printers
-you can print "put here the name of you least favorite superhero character" figures
-you can print benchmarks
-you can print great projects (and shows something like non working fidget spinner)
I read more about it, bought one and I am very happy as it's extremely useful for DIY projects (cases for example), fixing stuff, making prototypes etc.
If I went to such event an saw such projects it would not make me interested 3D printing at all.
Don't get me wrong, I am not hating those folks, just being a bit salty. We shouldn't say all the time something is great while it isn't. We don't need to discover wheel again or change it into square.
It's ridiculous to harvest fibers from the waste of animal abuse when so many cheap, safe, sustainable plant fibers are so easily available.
Its crap, all crap. Going to extreme measures to make something nobody needs or can be done much better and cheaper with conventional technology. I get these are young people looking for ways to make a difference or come up with new and useful ideas, but a moments consideration should be enough to tell you these particular ones are a total waste of time. Like 3D printing these huge resistors, when current resistors are a fraction of the size and cost and come on reals of 5000 for $20, and are placed by pick and place machines at a horrendous speed. Together with the additional devices that you would need for a complete circuit. So, why the need for these huge resistors? Its a case of doing it for doing it's sake with no chance of having a practical end goal.
I like the idea of being able to print simple circuits directly into your design, by-passing the need for making PCBs for that. The size can certainly be reduced with clever 3d designs and printing with small nozzles. but I don't see any idea here that pushed that forward. Sure you can use the biggest downside of conductive filaments - high resistance - to make resistors, but that's about it. Maybe something like a capacitor or an inductor is possible, but all with terrible tolerances and poor performance. One would have to have an idea of how to at least print something behaving like a semiconductor, a diode, to build something akin to transistors to make anything useful with it. And of course you still will need a way to print proper traces, which is still at best possible with an expensive metal printer so far.
@@Hugh_I in other words, its a cute idea but totally impractical, and mostly useless. You see this sort of thing a lot. People get a cute idea and spend an awful lot of time developing it without actually thinking forward in time a little and asking themselves "is this really something useful or just a minor curiosity, and could my time be better spent elsewhere". Even the simplest circuit utilizes some advanced form of electronics like a LED, and you won't be 3D printing a led. The only use for this sort of thing is imbedding cables into your plastic so cabling is premade for you and inside the structure, but since this stuff has high resistance even that won't work.
@@RobertA-hq3vz yep, pretty much
Printing with clay sounds promising for making your own china or molds to make parts out of metal.
The rest sound like useless waste of time and money to me.
The capacitive sensing reminds me of my masters thesis - integrating 3d touch functionality in objects using conductive filament czcams.com/video/4BT6Nw2kWPs/video.html and mschmitz.org/publications/schmitz-CHI19-trilaterate.pdf
Amazing work! Thanks for sharing.
Why are we thinking so small? Coffee grounds? Not everyone's a hipster, while the solid brown color is kind of boring. There's something that's overlooked yet is produced in incredible quantities by the whole world. Used toilet paper is the next big thing in FDM imo. It's also biodegradable and comes with an incredibly diverse palette of shades of brown. I know that someone's going to get rich off my idea now, but saving the billions of gallons of water from the excessive flushing caused by clogged toilets, is my reward.