Thanks Stan. Very interesting.

Quote Originally Posted by 120mm View Post
I have to agree with Abu, here. In my guise as an Airplane mechanic, I come into contact with many talented machinists who can make absolutely *anything*, regardless of the available equipment.
I agree, but after two minutes on wikipaedia my list of amateur expertises now includes metallurgy. annealing of the cap is complicated and it's needed to increase ductility.

If I understand correctly, and it's possible that I don't, if they don't change the metallurgical properties of the copper disk, it'll fracture instead of producing the shape needed to puncture armor. (Or at least heavy armor.) If the cap is the production bottleneck, however, I'm sure Iran is stockpiling them in dispersed locations and there's no reason Iran couldn't have people smuggle the caps in their pocket and have the rest of the device made locally.