That’s a great idea. I’ve been experimenting with DIY plastic using HDPE water bottles. Basically cutting bottles into small peices and melting them in a small amount of coconut oil either in oven or pot. The oil prevents much of the fumes from escaping and the amount can be varied to provide self-lubricating qualities to finished plastic. Some people have used this method to make bearings and gears similar to Delrin.
The hard part is finding an efficient way to shred the bottles as it takes quite a few to make any decent quantity of raw material.
Jerry
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