Hi
I would like to cast components using 3D printed molds.
The 3D printing process uses laser sintered nylon which has a rough porous surface,
the first attempt using blue PVA release agent and polyurathane casting failed, and using Easy-Lease did not work well either
with the casting material sticking to the mold.
Do you have any recommendations on types of surface preparation, release and casting compounds ?
Alternatively I could cast a silicon mold from a 3D printed positive, however dimensional stability is important - I am looking for 0.3mm in 100mm.
Many thanks.
Regards
Paul

put simply ... You WILL have to do something more than release treatment of the rough/porous Nylon surface...   Can it be sanded/polished?

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