Making Mold For Jigs
Posted June 13 2011 - 10:54 PM
Posted June 16 2011 - 06:38 AM
Posted June 16 2011 - 09:04 AM
I have read on another forum that the stiffness and integrity of the mold can be improved by including steel wire mesh or similar, in the pour, Kind of like reinforcing concrete with rebar. This will not improve the wear problems of the cast faces, but will reduce the tendancy to crack. I haven't tried this method, as I now do my ballast weights a different method.
The big question is how many good pours can you get, before the degredation becomes a problem? Sorry, I do not have an answer for you. A lot depends on the detail in the casting. A simple casting, that drops out easily, is probably good for a couple of hundred, but this is a pure guess. Maybe someone can give a better estimate based on experience.
Posted June 16 2011 - 04:19 PM
Posted June 16 2011 - 09:30 PM
Posted June 17 2011 - 07:52 AM
Am going to try Durham Rock Hard Putty and a RTV Silicone. Will post when both are done and which one does best.
RTV will definitely work and work well. If you don't mind paying for the stuff it's hard to beat short of aluminum. If the Durhams putty you're talking about is Rock Hard Water Putty then you can forget about pouring molten lead into it....trust me.
Posted June 17 2011 - 07:30 PM
Also, has anyone tried the "The Perfect Replica Mold" from Hilts Molds?? Looks like a great alternitive.