Zen Toolworks Fine Graphite Mold Blank for Casting Silver and Gold- 150x150x20(mm) Fine grain graphite block measures 150x150x20 mm. Can be used for metal casting mold making and EDM Used For: Engraving, Carving, CNC Machining, Mold Making, DIY, CNC Router, Router, Casting Software can be used: VCarve, VCarvePro, AutoDesk, Fusion360, Aspire, Inkscape, GCode, Grbl Shapoko, Inventor, XCarve Machine