Continuing my crossbow obsession over here...I wanted to show my first attempt at a fullsized, forged prod. Unfortunately it was a bit of a semi-failure. I underestimated the thickness I'd need, used 1/4" thick stock and ended up with about a 90# draw weight. In an effort to boost it back up I added a set of saw-steel leaf springs...this sort of worked, and the finished prod appears to pull about 200# with a 6" powerstroke. I was hoping for around 300#, but 200 is adequate...if the cast seems reasonable I will likely build an xbow around this thing.
The forged part (front bow) is made of 5160 leaf spring, with rolled nocks, and is about 22" wide across the string. Tip rise is 1/2", and the prod is slightly under 1/4 thick by 1 3/8" wide at the center, and 3/16" x 7/8" just behind the tips. The triple layer of sawblade steel in back boosts the thickness at center up to around 1/2".
The extra leaves and steel clamps creak like crazy but do look kind of cool, I think. All in all this was good practice, and I'll know better what to do next time (use 3/8" or 1/2" stock, for starters!)
Comments, questions and advice all welcome; thanks for looking!