Metal Casting

*Cosmonaut figure as Lucifer, the Lightbearer.* See my video for an overview of casting metal figure directly into printed ABS mold: http://youtu.be/ZvKtsrt9kTo ******** I'll try to write these notes out in a tidier format soon, but I'm totally high on molten bismuth fumes at the moment, so it's stream-of-consciousness for now: ******** [UPDATE: I have to point out that all the low temp "cerro--" alloys have lead and cadmium, and are toxic. You need to use proper ventilation, and keep it away from food preparation areas. In fact, I'm going to be looking into "Field's metal", which has neither lead or cadmium, and I'll report back how well that works in ABS. The objects you make *won't* be suitable for food preparation or food containers or utensils of any kind, and probably not for kids' toys either. FWIW, I've seen several gunsmithing how-to videos that don't mention toxicity of the Cerro-lines at all, and they aren't using ventilators either, but they should. For all I know it gives off gamma rays too. Here are some Material Safety Data Sheets I found: http://www.bendalloy.co.uk/Cerrosafe.pdf http://www.alchemycastings.com/pdf/Low158-190%28Safe%29.pdf And some usage instructions, with no mention of ventilation or toxicity in normal use: http://www.brownells.com/userdocs/learn/Inst-446.pdf http://www.brownells.com/userdocs/documents/bt002015.pdf http://www.brownells.com/.aspx/lid=10667/guntechdetail/Cerrosafe-sup-sup-The-Gunsmith-s-Secret-Weapon Use at your own risk. If you want to try these molds with friendlier materials, you might try casting simple plaster of Paris in the "Lamassu" (winged bull creature) mold. That one is a thin, break-away mold: no solvents required. See the photo I've added.] **Casting bismuth alloys directly into printed ABS molds:** I've uploaded the .stl of the mold shown in the video, as well as my gcode and sg3 files. With these the finished figure is about 2