I have seen Don's. Basically the same with a smaller ID of the furnace. it's actually more efficient than a forge, as you are not operating at anything higher than 3 to 5 PSI at MOST, so much more efficient than using the forge to heat treat. And efficiency is not so much an issue, spending alittle more gas to get consistent even results IMHO is well worth it. It is also not to scale.
__________________
Founder and first member of the SBA, The Space Blacksmith's Association!
Last edited by ApprenticeMan; 12-24-2007 at 11:47 PM.
|