Investment Casting is the process of pouring molten metal into a plaster or ceramic mold with high heat resistance, letting it fill a custom designed void in that mold, allowing it to cool, and then removing the solidified part from the mold. Relative to sand casting, this process is especially capable of achieving more delicate features. Typically, the "pattern" used to create the investment casting mold is created by 3D Printing a "master pattern" and then putting the part into a furnace where it can drip out, leaving a perfectly shaped void in which to pour metal.
Gold, Silver, Brass, Copper
+/-.03" to +/- 3% depending on part size
~600 µin Ra
15-25 Business Days
6" x 6" x 6" (150mm x 150mm x 150mm)
0.01" (0.250mm) - Plaster Casting
0.04" (1mm) dependent upon material