Better vacuum former
thingiverse
To create an inexpensive, simple vacuum former, follow these steps: first, laser-cut or CNC one each of various svg/dxf files on 1/4" plywood/mdf; second, 3D print hose_adapter and post_holder from stl files; third, assemble frame parts with CA glue and seal joints with silicone; fourth, refer to the sketchup file for assembly guidance, using cement board for the top piece; fifth, dismantle a heater or use a power supply and nichrome wire for the heating element; sixth, attach heating wire to the cement board using ceramic posts if possible; lastly, use a shopvac or vacuum pump (3CFM) for suction.
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