Heat resistant casts
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Heat resistant casts

Posted in Custom Workstation

Does anyone know where I can buy a fireproof casting meterial for casting in metals, all Ithe meterials I can find require a minimum order of one ton and I only need enough for one or maybe two small casts. If anyone has one of these meterials lying around I would happily buy some off of you, my plan is to make a lost wax cast so sand casting won't work for this project. Anwy help would be greatly appreciated.

Posted by pock63
on Tuesday, September 3, 2013
User Comments
pock63 -
Wednesday, September 4, 2013
That would be great for custom figure parts and accessories and I might use it in future but what I am trying to make at the moment is a actually a piece of jewelry itself. I'm working on a metal ring.
Patraw -
Wednesday, September 4, 2013
I checked out a book from the library on jewelry making one time, and the author had a metal-casting technique he used with a cuttle bone (those things that pet birds use to sharpen their beaks). Basically, you cut the cuttle bone in half, carve out the object you want to cast (I believe he was doing a cross or a sword), seal it back together, and then pour your liquid metal in. The cuttle bone gets charred something fierce, so it's only good for one go, but it works. Obviously this will only work if you're making something relatively small and thin, but for stuff like toy swords or axes, it'd be ideal and pretty cheap.

How about simple dirt? You could bury your wax sculpt in tightly packed dirt and pour the liquid metal into that. I saw a scientist do that on television with an (empty) anthill (he wanted to make a model of the ant's tunnels and caverns, which ended up looking like an inverted tree, it was pretty cool). I think he used brass for the metal, but I don't remember for sure. I suppose you'd probably get some of the dirt's gritty texture on the surface of your cast, but, depending on what you're making, that might actually be desirable (I.e., pitted metal, textured monster skin, etc.)
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