ChristophIt doesn't really matter how large the part you want to make is. Here's a 10" long, 14" diameter, carbon fibre - plywood - epoxy resin shell, curing in a vacuum:
(The steel part is just a positive mold)
Size doesn't matter
A project log for Aquarium Air Pump -> Vacuum
I needed a vacuum pump for making some FRP parts, so I modded an aquarium air pump for that.
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