Metal Casting Mold. Castng Metal : Sn-Bi Alloy(Melting point 138c) Filament : Glass fiber 30% filled PLA(HDT 160c, annealed after printing) http://nature3d.net/filament/lfg30.html https://twitter.com/nature3d_/status/1186255833769791494 We also have free 160c heat resitant PLA filament t…