While they’re not what they used to be, the Foredom hammer handpiece
is still a great tool. I have several Foredoms and a Swiss style
Badeco hammer handpiece as well. I use it w/ an “s” motor and also
w’ an Otto flex from Frie and Borel (1/5 hp).
I use this tool for stone setting and riveting. Great tools. One
caution: the anvil point on the Foredom is hardened, I’ve had several
break off, leaving the threads in the tool. The handpiece must be
repaired then. Don’t drop the handpiece on its tip!
These tools can do a lot of damage quickly if not used w/ caution.
Good luck, Andy Cooperman