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Jul 24, 2013, 01:32 AM
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Fiberglass mold begins






As expected, it was incredibly hard to build that, reshaping many pieces of wood to get 3D angles, laminating 1 sheet at a time to get curves. It still has problems. It's going to need a lot of sanding & body filler.

Ideally, the mold could be broken down & reshaped, but there seems to be no way of getting a smooth surface with the screws in. This brings up the topic of 3D printers, laser cutters, & CNC mills.

A really big 3D printer & a few gallons of ABS would make molds a lot easier, but they're still a cost saving solution. They still need a lot of fussing & spit out balls of yarn that need to be sanded.


The laser cutter was actually considered the revolutionary machine before 3D printing got popular. Their limitation was being only 2 axis. Much progress was being made in cutting thicker materials when Bre Pettis spoiled the laser cutter party.


The machine you want when money is no object is the 5 axis CNC mill. They have a table which moves on 2 axes, in addition to the cutting head moving in X, Y & Z. Their mane use is making molds. If someone figured out how to make a 5 axis CNC mill competitively priced to a 3D printer, that would be a good business proposition.

There used to be a lot of RC hobbyists building CNC mills. They invested all their resources into just making the CNC mill & producing nothing else with it. Those seemed to disappear when 3D printing got big. The quality one could get from a home made CNC mill was probably inferior to a 3D printer.

Lacking unlimited money, the ideal machine is still the 3D printer.
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