Tom, I’m so sorry for your loss, and hear you loud and clear when you talk of the loss of tools, and the need for special insurance. I would be in the same boat.
A couple of things - years ago I read an article in a farm paper about retempering burnt tools. I forget the details, but it was basically some trial and error, finally leading to oil quenching after heating to cherry red. For large volumes of tools, a refractory lined heat treating oven would be optimal, could probably be fired with charcoal and a blower, a covered mini forge idea. Finding the balance of hardness and toughness is the key, but there’s nothing to lose at this point, could save big bucks.
On fire, I hate that our customary building style and the fiberglass insulation will burn so easily. So much loss.
I would like to suggest considering straw bale for reconstruction. Far better insulation, cheaper for materials as wire reinforced stucco is the interior and exterior finish plus no insulation batts, and no poly, acoustic seal, or the time to install all the above, superior sound barrier, green, and best of all, the only building system other than concrete that will withstand a 2 hour flame test. Literally the wood pile could burn down against the wall, and you might still save the property.