21–30 of 41 posts
My wife was wondering whether this can be considered 100% healthy: don't you need plastic to reach a very high temperature to model it that way? Doesn't it start releasing whatever thing that might be carcinogenic or such?
they have a section discussing different kinds of plastics, and simplifies the information to the notion that if the plastic lacks a recycling symbol then it is in the category of 'unrecyclable'
Always wanted to do this, but I was afraid reprocessing plastics would release toxic fumes or hard to detect dangers for the average guy. I can't stand throwing things anymore.
I'm obsessed with not throwing away things and really appreciate a cool project like this. But nonetheless, I would like to emphasize that recycling is no substitute for not producing and not consuming plastic, which is by far the best way to fight what is depicted in the Why? section!
A positive thing for sure. But the hardest part is not the processing, it`s the sorting of different types of plastic and the washing phase if required.
they have sorting suggestions based on individual plastics' density
http://preciousplastic.com/videos/plastics/
in this first video they demo the density example by first suspending in water, then adding salt to increase the water's density for a more complete seperation
Earlier quoted context omitted.
I'm obsessed with not throwing away things and really appreciate a cool project like this. But nonetheless, I would like to emphasize that recycling is no substitute for not producing and not consuming plastic, which is by far the best way to fight what is depicted in the Why? section!
You're into the San Francisco glass jars + tissue bag trend ?
Earlier quoted context omitted.
Sure, it works fine if you're selective about the plastics you use, especially if you avoid using objects that were made using a mixture of different plastics.
Honest question, what's likely to happen if you mix plastics? I understand how if melting points are different you might get odd results, and I'm guessing maybe very different materials won't bond at all leading to cracks in the final product. But if you doing something like they show in these videos, heating it to Note that I'm thinking entirely in terms of what I might do myself in my workshop, not what'd scale to…
It's a good question, and the answer I'll give is that I'm not 100% sure. These links may be of interest:
http://www.nytimes.com/2013/07/02/science/polymers-why-some-...
http://www.lotfi.net/recycle/plastic.html
If you find any other clear information about this subject I'd be interested in learning more.
Always wanted to do this, but I was afraid reprocessing plastics would release toxic fumes or hard to detect dangers for the average guy. I can't stand throwing things anymore.
I'm obsessed with not throwing away things and really appreciate a cool project like this. But nonetheless, I would like to emphasize that recycling is no substitute for not producing and not consuming plastic, which is by far the best way to fight what is depicted in the Why? section!
Reduce your consumption as much as you possibly can. Then reuse everything over and over: rinse out the container and find another use.
Recycling is the last resort.
Intuitively shouldn't a dedicated plant's machinery have much higher efficiency? Coupling that with the biggest problems of recycling being the combined energy costs of transportation and processing, this seems to not solve anything?
It kind of solves only one leg of the transportation, but the final recycled plastic will still need to be transported. That's again assuming costs of transportation are linear with respect to number of sources (but I don't think that's true...). And assuming same thing about processing energy efficiency, this does worse with the processing energy part.
> You can make the molds completely yourself using CNC to mill the lathe or simply welding them.
.... What? "mill the lathe"? I think they accidentally a word in there.
>These lines can be used to make new raw material (3d printing filament), granulate, spinned around a mold or up to you to find new creative ways.
> Well suited to make large and more solid objects, the oven itself is also a great machine for prototyping and making plastic test.
> Since it works with molds you can easily replicate and set up a production.
This website desperately needs copy-editing.
----
Also, I'm completely tired of people coming into an existing engineering discipline and deciding to come up with a whole bunch of terms for existing processes. It's not "a injection", it's *an injection molding machine. All the new terminology does is make things extra confusing.
Earlier quoted context omitted.
Sure, it works fine if you're selective about the plastics you use, especially if you avoid using objects that were made using a mixture of different plastics.
Honest question, what's likely to happen if you mix plastics? I understand how if melting points are different you might get odd results, and I'm guessing maybe very different materials won't bond at all leading to cracks in the final product. But if you doing something like they show in these videos, heating it to Note that I'm thinking entirely in terms of what I might do myself in my workshop, not what'd scale to…
Ive seen other blends as well, with intermediate temps between the 2 initial plastics. Now, I only have experience with PLA, ABS, Nylon, PVA, Polycarb-ABS, and HIPS. A lot of this is still unexplored as it took industrial quantities to do anything.
WHat these machines will allow is experimentation on small batches and how plastics work and don't work. And that's awesome.