First of all, I'm not sure if this is the right section for this, but it seemed closest since it involves a gas forge.
So, I was recently commisioned to make a knife for someone, the only issue is that my coal forge doesn't heat a large enough area to harden the while blade ( or at least not without some large risks)
This brings me to what I need advice on, to heat treat this I am looking at 3 main options, buying a propane forge or buying or making an electric heat treat oven. I would build the propane forge but I don't know much of the intricate details of how to get then working well and don't have the time right now to teach myself. Is there an inexpensive propane forge that will work for heating a 10 in blade to the correct temperatures, would I be better off just building a electric oven or is there an option I'm not seeing? Also my budget is at most 400 but preferably less.
Thanks
Noel