Yeah - I have links to a few designs. Most are intended for casting metals - also a grand pastime. My only concern is that most DIY designs tend to have an strongly oxidizing flame, which will burn the steel to worthless scrap as soon as it gets hammering hot. For 99.99% of blacksmithing I need a neutral or slightly reducing flame, which is simple using coke (the first step in using coal is to coke it). If I was confident that I could routinely regulate the combustion to avoid burning the steel... but the propane types would seem to require a lot of juggling to do that - tweak the air - oops, too much gas - not hot enuff - tweak the gas -- oops, now it's oxidixing again... BUT I could be wrong <grin> - I'm just guessing.<br><br>if you know of any plans for DIY propane forges aimed at 'smithing, I'd like to look them over. Thanks!