I got 3D printers and access to laser and water jet, however machining is getting pretty expensive for me. Lately I am needing some metal parts made and I am considering printing the part, and making a silicone rubber mold to cast tin or a alloy of tin.
I have dealt with large companies locally with sand casting but they do not do 3d printed molds yet. So i am wondering how common it is outside of the Philippines?
Is the lost PLA method viable for investment casting from a pros point of view?