trades > fabrication > plastic
document updated 8 years ago, on Apr 17, 2016
Plastics that have a low melting point are good for hobbyist manufacturing:

If PVC burns, it will release dioxins, which are a serious health hazard. If you're heating PVC, you must take precautions to make sure it does not overheat.

However, many hobbyists do heat PVC safely. Polymer clay is mainly PVC, and hobbyists have to bake it to cure it.