Evolution of a Ring Bender / Ring Roller Machine: I read an interesting instructable about a metal bender and then I saw the most interesting photo of a theatrical workshop tool. I formulated an idea and it quickly turned into a new tool.
Evolution of a Ring Bender / Ring Roller Machine : 3 Steps (with Pictures) - Instructables
DIY Ring Roller (prototype)
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Baileigh Industrial Manually Powered Ring and Angle Roll Bending Machine, 3 Rolls, 1/4 Bends/Curves
The Legendary Saga of Chibi-Mikuvan Engineering, from October Until Now – Equals Zero
Make 3d printing 2014 by wattronix - Issuu
Digital Fabrication for Designers
KAKA INDUSTRIAL PR-3 Ring Roll Bender, 3inch Manual Roll Bender,Manual Sheet Steel Ring Roll Bender up to 1/4 round bar and 1 x 3/16 flat bar, easy to operate.
Lathe, Sasecurity Wiki
Evolution of a Ring Bender / Ring Roller Machine : 3 Steps (with Pictures) - Instructables
Ring Roller/rolling Bender : 5 Steps (with Pictures) - Instructables