I checked out my CZ universal metal bender t’other day and it had a 3/16” diameter mandrel in the box. Since found another mandrel that looks about 1/8” diameter. Good little tool. I have bent numerous different shapes on it whenever I have occasionally needed it.
Apparently cost thirty two quid, delivered, back in early 1985, but I bought it second hand less than ten years ago. Model Engineer featured using it in April and May 1991 editions.
I would expect it would cope with springy materials.
Edited By not done it yet on 11/09/2019 20:32:28