Very well said Nicholas ! I have been hoping that somebody would start working on something that would grind up old pop bottles, water bottles, etc, so they could be turned into filament. We have the filament extruders, it is the grinders where we are failing.

I have thought about food processors, and leaf grinders, but thinking about is as far as I have gotten. An easy to build, safe to use, plastic grinder would completely revolutionize the 3D printer world, and the way plastics are recycled. A LOT less trash in land fills !