Drink coffee or print coffee - On which side are you? Don't forget to like & subscribe and share this video on Facebook, Reddit, Twitter, and other platforms!
I brew a lot of coffee, and I could say that you could do a similar test with light roast coffee. The difference in between light and dark roasted coffee is the brittleness. Dark roasted coffee are less dense and brittle than light roasted coffee. So, you should get a better result with a light roasted specialty coffee.
You forgot an important additive for polymers "Blowing agent" to make a cellular plastic instead of a bulky one, whit that you could reduce the density of your printings.
Besides saving material the filllers modify the mechanical properties quite much. In a thoothfilling the Composite has round up to 94 Mass % of fillers in the material. Fillers reduce the durability of a material - the cracks run just around the particles and the failure happens earlier and with lower forces. The trick to improve the strength of a material through fillers is to chemically bind them to the base material - e.g. the mentioned partical in dentistry are bound to the Bowen-polymers with silan molecules. I have no idea what the residue of old brewed coffee beens contain chemically but you'll find out. There will be a possibility to adapt the hydrophilic properties and the chemical bonding. The best thing will be to have premixed coffeebeannanoclusters to mix to the pla. But in the end it's not about the mechanical properties but the smell.
James Hoffman: Let's 3D print coffee accessories Stefan: Gotcha, let's print with coffee The timing couldnt have been any better, within a week of each others video.
@@0oSiLveRo0 it was very hard to follow without a prior fundamental in depth tour of the program, so im starting there first. coming from sketchup it's a doozy, but sketchup is just so bad for making changes to complex parts of a model down the line
@@CNCKitchen Good luck. From my understanding, your compost pile will need to maintain an internal temperature of 130F (about 54C) to actually compost PLA, which is a tough temperature to consistently hit in a home compost situation. I hope you find a way to compost PLA that can be done at home reliably. That would be a game changer with all the scrap 3d printing produces.
@@CNCKitchen Looking forward to see the results, though I am not overly optimistic that PLA can be easy composted at home. But, who knows, you will let us know in another nice video :)
Those coffee particles still look huge to me. I work with twin screw extruders so maybe I'm just used to super fine pigments, but we have never had a noticeable drop mechanical properties even at 5% pigments. Maybe try putting the bowl and coffee grind in a freezer for a while right before grinding. ABS/ASA is commonly cryo grinded because it will just remelt from shear otherwise. Making it colder and more brittle may help get smaller particles and better mixing.
3d Fuel sells a "Wound Up" brand of coffee Filament, I used some a few years ago, it's pretty cool! They make a Buzzed brand that uses beer hops and another that uses hemp fibers. I love how you can do this yourself now! This makes the machine worth it! I drink soooooo much coffee lol
As a consumer, specialty filaments are typically too expensive. As a maker, I'd like to experiment myself! As a citizen, I think sustainable options should indeed be pursued.
yeah honestly if I had the machines to make my own filaments I'd be all over that. Especially if it could be made foodsafe, imagine those compostable utensils but if they were backyard compostable!
For the higher coffee content, it might be an idea to mix the coffee and PLA into a fine powder and extrude them as pellets first, then use those pellets to extrude again to make the filament.
The plastic fluidity changes because your filler changed the specific heat of the plastic. Your thermal cartridge is putting out a certain amount of power per second and your plastic is absorbing that same amount of power. Adding your filler means that a certain volume of plastic can actually hold less heat now and therefore reaches a higher temperature for that amount of power absorbed.
yeah mentions something like that at one point where he says he mixed the grounds with the broken up pla balls to help evenly mix it, or something like that haha
i have started to almost exclusivly use polyterra for my pla parts. Not only does it give and amazing finish and prints very well, it also uses 20% organic fillers and comes on a really well made cardbord spool
That stuff is pretty amazing. I used to to print some coasters that look like toast and waffles. The banana yellow is spot on Eggo color, haha! It's definitely not as strong, but the matte finish is beautiful. My biggest problem with it is the smell while it prints. Gives be an awful headache. 😢
@@oOSpecialProskillsOo Ok, to be fair, layer adhesion is not bad, it's just not as good as regular PLA. Normally I don't have any problems with it, but I've had small details breaking off very easily and layer pealing apart in vases.
If we're talking about bio-composite polymers, using chitin can be a great experiment. Chitin is what crab/lobster shells are made of and has some amazing material properties. Chitin or it's more workable counterpart chitosan can be bought in bulk easily and cheaply.
I did a school scisnce project on what can help keep snails out of a garden, and I found that used coffee grounds can be used and out of the 4 things I tested it had the best result at nearly 100% success rate. So if you dont want to make filament, you can try putting it in a pot or around a garden!
I just come around this channel a few days ago, mr3dprint shows how he produces his PET filament from plastic bottles with really little material, no leadscrew, no overly expensive extruder, just a razor blade, a heater block, a stepper and a 3d printer main board for the temperature regulation
The Thermomix! My top rated machine throughout the house. It is honestly my Family's favorite kitchen appliance. Love the combination of coffee and filament!
I'd be interested in trying some like this for my 3d printed model building tools. Tools like anything wear out or break, and I'd feel a lot better knowing that the material were more ecologically sound.
You can also use spent coffee grounds as a rub for things like steak, just mix it with salt in the ratio you'd like. Or even mix it with chocolate when making cakes, pies, cookies, chocolate milk, etc.
Owesome idea using coffee! I would definitely buy such a filament because I love coffee! Maybe you could try it with fresh coffee ground. But the oils might be a problem.
@CNC Kitchen: you need to make tests on ASA vs PLA vs PETG vs ABS on "weather resistance": Water (normal & salty) exposure, UV Light, Heat of the sun. That would be so interesting to see how the element affect 3D Prints :)
This seriously seems like it was perfectly timed with James Hoffman's recent video about 3D printing coffee gadgets... He even recently had a video about how people need to stop putting coffee in every product. Your intro is even somewhat Hoffman-esque.
I have some experience with heterophase composites, even PLA-based. Easiest change for you to apply is a dispersing agent to prevent the coffee powder to agglomerate within the polymer matrix.
7:50, I'm glad you mentioned a ball mill. I've seen so many youtubers lately that don't know the proper way to grind powder that just use a blender and then shrug when it doesn't work.
I know you mentioned a ball mill but a cheaper (albeit slower) method would be a stone mill/chocolate melanger/ wet grinder. Typically they'd use some sort of oil matrix (think chocolate) but the particle size reduction of continuous run times of 3-4 days on these machines can get down
I like how thorough this is and all the effort you go through with making sure its properly dry and fine and then checking the different percentages :D I look forward to any updates too! That first vase you printed looked SO PRETTY! I think I would like the filament just for how pretty it looks :o
Ich hab mich schon immer gefragt wie schnell sich das abbaut, du hast echt n gutes Gespür für die Themen. I´ll always asked myself how fast it dissolves, you really got a good sense for topics. Grüße greetings :)
I did my bachelor thesis about natural additives for bioplastics. Cacao powder worked as plasticizer and did better than coffee ground. The only problem you are going to have will be the cleaning. The cacao powder has a lot of oil and other stuff in it which will make a mess while extruding. Just give it a try though.
Yes, I would use filament made from coffee as, I already have. I brought 3Dfuel filament made from spent grains, coffee, hemp even their black filament made from garbage not as nice smelling as the first three. All printed wonderfully
To increase mixing grade of coffe to PLA I would try a 2 stages approach. First mix 20 % Coffea. You should obtain a pretty bad filament, unprintable, but still a filament. Cut the filament in pellets similar size of virgin pla you have and than mix 50% the result with the virgin PLA. Similar size particles are more easy to mix than so different size, and separation due to vibration is more difficoult. Other approach is pre-mix the coffe with fine ground virgin PLA and than add this powder to the pellet virgin PLA. It should be an easier approach but I guess 2 stages one is more likely to give you better results
Coffee has a number of fatty acids: including oleic acid. they are outstanding capping agents...which would reduce viscosity of the mix. not sure if this was the improved flow that you noticed when making it. But it may reduce layer adhesion as it is soluble in water. I use Oleic acid as a capping agent in producing nano particles and coffee or even better green tea are great sources. I wish I had that filament extruder for experimenting using my powdered nano material fillers.
You can easily ferment lactic acid producing bacteria in old coffee grounds. Sparge the grounds after producing the lactic acid. Boil said liquid to 260C the lactic acid will polymerize and fall out of solution so yes you really could make filament from coffee
You could blend the pellets and fine coffee, maybe that would make it possible to use a higher amount of coffee because the shredded pellets would have more surface for the coffee to stick on :)
(Sarcasm) Ah yes, make the printer compete with you in the consumption of coffee, what an excellent idea! (Serious) Biodegradable recyclable plastic made from waste grounds would be awesome. I wonder if that's a better use for grounds than compost.
Ich habe letztens eine Rolle ABS in einer Tüte gelagert, in welcher wir zuvor Senseo Pads gelagert haben. Habe mich gefragt warum mein Drucker plötzlich nach Kaffee duftet, bis mir aufgefallen ist was passiert ist. Aber das hier ist natürlich next Level xD
PLA doesnt decompose in conditions found in nature. Unless you have an industrial composter, waste of time. The coffee will be long gone but the plastic will remain in the environment. Its not like the PLA decides to change it properties because a filler. Its just volume
Smooth segue for presenting an advertisement. Good work. Interesting to see the properties of mixing PLA with our loved beverage. I guess we should look into making coffee grind stronger, would be nice to reach 100kg of tensile strength.
You uh, might investigate the particle size of filler vs the strength difference? And maybe you could mill some recyclables down into dust, see how different plastics affect the pla. Really it would be dependent on their ability to bond to the pla.
Cool concept. If you've already got a dehydrator, pellet extruder, and solar panels to produce the power, seems like a cool way to reuse a small portion of coffee waste (rather than put it all in a compost)
In addition to getting a twin-screw mixer and a ball mill... I would also suggest getting some lycopodium powder and some activated charcoal. The lycopodium powder should help repel water, and the activated charcoal could further improve compostability. I'd also suggest using a freezedrier to reduce the water content of the coffee grounds as much as possible.
Interesting note about spent coffee; you may be right that the oils act as a plasticizer, but they may also be directly lubricating the channel as the filament flows through it. There is a small body of academic research within the field of tribology into the uses of spent coffee grounds for lubrication, though my knowledge base is far enough from tribology that I can't really speak to it much more than that
Smell, texture and color would definitely get me to buy this for the same reason I buy wood filament. Having more options for decorative pieces is always great.
I don't like the Thermomix. It's typical for an All-in-One-Machine. They can a lot, but nothing very good. So at the end, you still have more than this one machine in your kitchen. And for 1000€ I get a lot of mixers.
Coffee PLA, it is the logical partner of Proto Pasta's Bacon filament. What's next though... Fried egg? Toast? Orange juice? Poridge? Corn flakes? Pain Au Chocolat? I know, the coffee is providing more than just the smell, but Toast flavoured is kinda tempting!
It would be interesting to see if the properties improve if you are able to mill the coffee down to a finer particle size - it would certainly improve the clogging, and might even make it easier to make filament with a higher %ge of coffee. I like the look of the printed objects, I think it would be useful for printing wooden carving style objects, the brown is richer than any brown filament I have seen, it looks like polished mahogany somewhat. I am also interested in your experiments with composting, I have often been told that PLA biodegrades but have never seen any actual data or experiments on it.
You can get filaments with around 80% metal or ceramic which you print and then melt the plastic away to leave a pure metal or ceramic part. If you refined the process a lot you could try this with coffee.
Fillers to try (not necessarily eco): ground chalk, cinnamon/turmeric powder/corn flour/coconut powder/papaya powder (meat tenderiser), shredded/ground tissue paper/cotton balls or actual silk material, fine powder salt, plaster of paris powder, metal powders, ground up powdered hair (keratin?).
BTW if you had used unused ground you would have had the nice roasting smell of the original brew I would guess and your final product would have a nicer smell as well.
You need to further dry and ground the coffee in a tumbling jar with BB's. The idea is to get a fine dust, rather than a fine sand sand. Hope this input can help you.
Have you heard of Orbium filament? High temp, non hydroscopic, stronger than PLA or ABS, does not outgass...have never used it but just watched a presentation on it. Sounds interesting
I would be interested in a 4% used coffee grounds 1% fresh coffee ground combination for the oils/smells/etc factors. i would think that some 'fresh' grounds added to the spent grounds to make the PLA would add a more enjoyable/powerful aroma of fresh coffee, while at the same time might change the physical properties of the PLA - due to the oils/composition of fresh ground beans over just spent ground beans. Maybe a different ratio as well - maybe 3% spent 2% new. This is counter-useful for things like "recycling old coffee grounds straight" but might give additional benefits if the chemical composition can change the end-result PLA - even in composting or recycling/remelting again into new filament. Needless to say this opens a window, if not a door, into possibilities to test out for beneficial PLA properties, even if it is just an "enjoyable aroma while printing".
You get freezer dried fruit powders...like Raspberry or passion fruit....maybe make filament with them to see how they smell and survive the process or cocoa powder....alternative test flavored oils....how cool would it be to print a green peppermint favored Benchie
