I have the industrial tube wringer (25US), a Microfold Brake
(250US), several plastic Paper Crimper and Corrugators (15US) in
straight and wavy patterns that work for well annealed thin metal and
a tool (a 5 blade pipe crimper, 35US) sheet metal workers use to
crimp the ends of large air handling pipe to fit the together. I used
the crimper to good effect before the other tools were popularized.
Then I bought the industrial tube wringer and lusted after the larger
ability of the Microfold Brake, so I bought one. I use the tube
wringer most often (for its intended purpose of squeezing tubes of
glue and for bending metal). I find I can put a deeper crimp in metal
faster with the tube wringer. I only use the Microfold when I need
big sheets, a rare occurrence. Now I am lusting after one of the gold
smithing, small multi size wringers (Cavallin Corrugation Rolling
Mill) that cost 160US. You can also corrugate using a hydraulic press
and pattern sheets, or evenly spaced wires.
I also highly recommend Patricia McAleer’s booklet on Metal
Corrugation, and Repetitive Micro-Fold Forms Using an Industrial Tube
Wringer by Jack Berry.
Be careful, it is addictive.
The bottom line is -go for the tube wringer first, it is
inexpensive, it works, and is useful.
Marlin - in oh so hot Denver with no decent rain for a loooong time.