There are a number of things I have contemplated making from recycled plastic. Thermo forming plastic always looked exciting in that it can use materials that otherwise might be thrown away (recycling) and make stuff that hackers just might be able to make and sell.
The challenge has always been the cost of molds and methods of heating plastic efficiently and then injecting at a temperature and pressure that is safe for laypeople.
There is a blow mold part I want to make recycling water bottles. But practical? Hmmmm.
Then I saw this on YouTube.
I have some experience making silicone molds which can easily take up to 500 degrees which means that for limited production run an injection mold could produce 1 to 200 units if the silicone mold were encapsulated in a steel mother mold that could take the high pressure while the silicone mold would shape the plastic.
I’d like to know if there is any interest in pursuing this technology in the Hackerspace. It doesn’t look like it would take up a lot of space and just require electricity and probably water (buckets) to cool the parts.