Originally Posted by
PartTimeScrapper
I so want to build me one of those. Ive been reading alot of stuff on other sites on how to build one I just need the time and money to do it. Maybe Ill make that my winter project build me a furnace.
You will not regret making a small furnace to cast your own goods or those you make to sell. It paid for me 14" x 40" metal lathe and a bunch of tooling.
As luck goes sometimes, I made a trip to the city to purchase my refractory when I found that the supplier of this had just tossed a truck load of a high temperature castable refractory into the bin. The bags had been wet and some lumps had formed on the bottom, the manager said I could have all I could pack onto my truck.
I poured the floor first, let is set up, then cut the hole for the tubing where the burner was to enter the furnace, set a plastic garbage can inside dead center then filled it with sand so that it would hold its shape when I poured the outside refractory.
Once the refractory set up removed the sand from insdie the garbage can, them pulled it out and put it back into the house for the wife before she missed it.
Before pouring the refractory set a sheet of cerwoll to the outside of the blue drum, once I began pouring the refractory tapped the sides of the drum so that it would settle out any air pockets.
For the lid drilled some holes from the sides then inserted some large spikes to hold the refractory in place once it set up.
Once you start, you want to push your limits, I'm a Ford flathead V8 fanatic -,eventually I want to cast some high performance aluminum heads and some tri power intake manifolds.
Hope you build your furnace, it could even come in handy for processing scrap, I also use mine to incinerate IC's removed from circuit boards, before milling them in a home made ball mill.
From a 1000 load of boards recovered 3.85 lbs of silver, which is sitting inside my furnace waiting to be cast into an anode.
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