To 3D-Printing: It is possible to recycle plastic waste into 3D-Printing Filament. We did it. There is not much household waste containing PLA, PETG or ABS (most common 3D-Printing Materials) though it is possible to 3D-print with certain types of PP (most common plastic waste). Some companies sell PP Filament too (though not recycled). The big producers of 3D Printing Filament are using basically the same Extruder of precious plastic, though with a lot more power and precision. The problem is that 3D-Printing filament requires a high precision ( +/- 0.05mm in diameter) for normal 3D-printers to be able to handle it. Achieving this precision is really difficult because you are working with many variables: -Motor Speed -Pull Speed -Temperature ( usually 3 Heat zones) -cooling temperature (we have air cooling then 2 Watertanks) -granule (flake) size ( if there are bigger chucks they will clog the feed for seconds causing bumps) -material purity ( if there are even hints of other Plastics in your granule it will ruin everything; it also has to be super dry) Even just getting the material purity and granule size sufficient for the process is difficult especially with household waste. That is why we recommend that if you want to try to make 3D-printing Filament you should get your hands on Industrial waste. We went around and found the factories near us and asked them if we could have there waste. They were glad to give it to us cause otherwise, it had to be burned. And it's a win-win situation because industrial waste is clean, dry, pure (no other plastics) and if the factory owner is nice he will even give you the data sheets so you know exactly what you are working with. Using Industrial waste you can cut out these variables and concentrate on the temperatures and Motor/Pull speed. Making 3D-Filament from household waste is very ambitious, though making Filament from clean Industrial waste is manageable! We did it and we are just a couple students from Germany! Though there is still a lot of research to be done: Material properties to figure out, print settings to perfect, Code to be written and so on. We are working on this Idea and sharing everything open-source online on youtube and mostly on Instagram (@qitech.de) or our Website. If you have questions or want to start research in this area too, feel free to contact us and we can share our experience and knowledge with you.

@ericlopez8997

4 жыл бұрын

K .l Mjj MM Ok zz

@doctorthee

4 жыл бұрын

Nice. 3d print filament is the best usecase for home plastic recycling

@Alobster1

4 жыл бұрын

I recycle printers and computer cases to make my own filament (I only use abs without fire retardant). I built my own extruder and I use a commercial paper shredder to shred my ABS. Most of my recycled filament is +/- .05mm from 1.75mm and prints great in my printer. I built my extruder using mostly components recycled from paper shredders and treadmills. The rest of the components cost me less then $80 or were printed. If you have any questions just ask. It sounds like your setup is way more complicated then mine as I only have one heating element and I only use a cooling bar instead of air/water cooling. I still get great usable results.

@Alobster1

4 жыл бұрын

@Dustin Eward I have tried extruding PET filament with my extruder that works great for abs. I had very bad results. The problem with PET is that it is not an amorphous polymer. PET is semi-crystaline. The problem with extruding semi-crystaline polymers is that there is a fine line between when the PET is the consistency of molasses and hard. An amorphous plastic (one that doesn't crystalize ) has a wide range of temperature where it has different consistency. I had the problem with PET crystalizing right out of the nozzle and becoming very lumpy. This is why glycolized PET (PETG) is used for filament. PETG is more amorphous.

@Alobster1

4 жыл бұрын

@Dustin Eward I'm pretty sure glycolization of PET is done when the plastic is produced and I don't think it can be easly done by your average dude. Yes I'm pretty sure PET could be used easily in a machine that extrudes pellets straight to the nozzle. I have experimented with extruding hdpe and ldpe. They are both semi-crystalline but HDPE is more so. Hdpe didn't give me good results. ldpe I could see being done but I would have to make some major modifications to my machine and I would rather have it set up for ABS all the time. www.spirol.com/library/sub_catalogs/ins-Plastic_Overview_us.pdf There is a list of amorphous and crystalline polymers

One of my favorite videos so far!! Good job!

To sorting by density: I think you can just start with water, grab the floating fraction, add salt to the water, grab the floating fraction again, and repeat. You can even retrive the salt used at the end of the process. Great video!

Thank you! Super informative and helpful information.

Great! Keep healty!

Great video. Very informative. Thumbs up.

Thanks!! great video!

Superb primer! :D

Excellent video. Very knowledgeable young man.

So interesting to hear about many more plastics, I didn't know before! We all have to learn more about it! :)

Great plastic info Thanks

Great job.

Very interesting, thanks for the video and stay safe.

Thanks from Bangladesh

Can you make video on how to make mold for various ball pen

Imagine a handheld device that could instantly tell you the kind of plastic, maybe by using the infrared technique (16:51). Clean ups would be way more effective since you don't have to look for the recycling logo, which in most cases probably doesn't exist. Let me know if you've seen a product like that 😃

@Alobster1

4 жыл бұрын

You can use your hands and your nose to tell what kind of plastic something is. Just from a bit of experience working with plastics I can easily tell what kind of plastic something is, if it has a filler, and if it has fire retardants in it. Every plastic has a very distinct smell when burned and burning behavior. Most plastics have also have their own distinct hand feel.

@ARTVENTUREFILMS

4 жыл бұрын

@@Alobster1 that sounds interesting but you would need a lot of experience to be exactly sure. I might get there one day but until then a device to "register" plastic would still be awesome!

@jonathanodude6660

Жыл бұрын

@@Alobster1 sniffing burnt plastic is a quick way to develop hormonal and cancerous issues later in life.

Filed for the drawings and 3d models? Can't find them on the website

Thanks so much ! I want to know if we can build IR censor to sort plastic ?

i want to build a house with plastic bricks. what would be the best plastic? thanks.

one tip, you should have explained cracking better, i feel like some people might get it wrong

I wish that injection molding equipment was as cheap as 3D printers. If it was then I would regrind and re-mold recycled plastics. It's a lot easier to injection mold plastics than it is 3D print. I've seen the equipment precious plastic sells. It's a great idea but the prices are above an average consumer. To be able to afford an electric molding machine, auger grinder, and the resources to build or purchase a mold is beyond my means. I can create a process for just about any plastics, but I don't have or can't afford the equipment. Regardless of that I love what Precious plastics is doing. Keep doing it.

@IO-896YT

4 ай бұрын

Ironically "DIY" thing make expensive 😅

preciousplastic, it would be very nice, if you even develop machine to "pyrolice fraction distillation" used plastic. I didn't get the industrial name of the process

@nathanburley

4 жыл бұрын

Do you mean pyrolysis fraction distillation?

AND ... ORGANIC POLYMERS. STARCHES. AKA... BIOPLASTICS. WATER. CONSTARCH. GLYCERIN. VINEGAR/SUGAR/SALT * (to shorten polymer chain... flexibility)

I believe wind turbine blades are made from GRP and as such are not re-cyclable... As the blades are replaced at 15years this means incineration or landfill is their fate... Not very green.. 😒

Subtitulen al español 🇨🇱

Me imagino que dieron muy buena información,pero como no se inglés no entendí nada 🇨🇱

First

Too lazy on what can't be done. The key to not burning plastics if they have a melting point slightly below the burning point.

@Alobster1

4 жыл бұрын

Yes but for most thermoset plastics there is no melting, they will only thermally decay. Thermoplastics melt because they are just long tangled chains of polymers. Heating them causes vibration at an atomic level and causes these chains to vibrate so they are able to untangle easier. On the other hand, thermoset plastics aren't just tangled polymer chains. As stated in the video there are actual crosslinks and bonds between molecules of different chains so you can't simply untangle them.

NOt a very eco vegan demo

Not to be picky but the video i just watched almost put me to sleep and i'm excited about this org. Please shorten the videos or spice up the format. Just making a suggestion. Love yall !+

Please talk slower