October 4, 201312 yr Was cirious if anyone used a big rig breakdrum lined with clay, and with doing that would it extend the life of the "fire pot" to last much longer?
October 4, 201312 yr A very durable forge liner can easily be made from sand and portland cement ( not concrete mix) . Mix 3 parts sand with 1 part cement and just enough water to make a stiff mix that can be shaped into a bowl. This liner will insulate the fire from the large heat sink of the brake drum.
October 4, 201312 yr I'm not a fan of cement for a refractory, heat turns it back into clay and lime. Clay and sand 1/3 works well, but I stray from your question. Claying your drum will alow you to insulate it, extending its life and making it less likely to scorch you in a careless (I phone substituted "Charles" which is appropriate ;-) moment. But it's big advantage will be to allow you to form an efficient ducks nest, helping insulate the heat as well as conserve fuel. Try this link. http://ezinearticles.com/?Depression-Refractory-Mix-For-The-Backyard-Foundry.&id=85797 The water glass is what makes "stove cement" different from building cement.
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