Propane fired lift furnace,designed by Reid, capable of melting 45kg (100lb) of bronze anywhere in about 40 minutes. The gas burner draws it's own air, freeing the system from the need for a blower (and electrical supply).
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A diesel blown mud furnace built for use for one day. Lacking enough fire bricks on the site, those that we had were stacked to form a thin walled chamber. Mud mixed with grass was then applied and the furnace fired. As the mud dryed, it provided useful insulation but cracked severely. More mud was forced into the cracks so that after the third heat of bronze we had a stable structure. Who knows, it may still be there.
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Lifting off a furnace like the above, to reveal the crucible of molten metal.
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Another view of the mud furnace showing the blower, diesel pump and mixing tube leading into the firing chamber.
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