Forum Replies Created
I have been thinking of marking the plastic too, and it would be good if we could add it into the forming step instead of a post-process.
Taking Dave’s welded trash can mold as an example, I’m imagining a hole drilled in the bottom with a slight recess milled in (either hex or circle shaped, respectively). By having the stamp on a threaded rod, it could be inserted into the mold and tightened on the outside — thus allowing the stamp to be swapped if you use a different plastic with the same mold.
I might not be explaining it fully and it might be a dumb idea too.
A cursory Google search shows that heat shrink tubing is one of many plastics, but not one of the 6 main recyclable ones.
It’s possible that one of those could be used, and I suggest you do some research by cutting some plastic by hand and using a heat gun.
Please report back on the forum once you do so, as it would be good to know of another recyclable use.
@kettlekekkers I really love your build, but had some questions before I pick up one on my local classifieds.
If I understand correctly, you have taken a shredder/chipper/mulcher apart just for the motor and electronics?
Instead of using the chipper’s blades, you’ve coupled it to Dave’s shredder design?
Good luck, but any excess money I have is going to build my own machines or to Precious Plastic Prime, not you.
HDPE is definitely foodsafe. In the USA, the most common source of it is milk jugs and their lids. As long as it was properly cleaned before melt, I’d trust it.
If it was ocean-collected, it’s possible it’s leeched some chemicals. But that’s not the plastic per se.
I think the Precious Plastics machines would be perfect fit for a Makerspace, many would also have the tools (laser-cutter, CNC, welders, etc) to help fabricate the machines.
I used to go to a local hackerspace on their community night, but never could afford the membership fee. I’ll like try to join one next year or later this year.
If trying to find one near you, try keywords like makerspace or hackerspace. If you’re unfamiliar with the concept, Make Magazine has a pretty good article diving into it.