well here is what i was thinking, i have an old 3lb sledge, i was gonna flatsand the face and weld a piece of mildsteel and then heat the whole thing, while its is welded and superquench it or maybe just cast harden it, then after since it is brittle from the powder and water put it in an oven for 2, 2 hour times at 400 degrees so soften it up so it wont be very brittle, does that sound right or is there another safety measure i should do