Chinese Brake for $20


Make a $15 "Back-Bend" Brake

Actual Bend Height (90 Deg.) = Height above bars + thickness
InSide Radius = 1 thickness

Making Prototypes:

Start with (folded and taped) paper prototype for the flat pattern.

Trace the flat pattern on (double) cardboard, 1/8" cut (half though with box cutters) on top of all the DOWN fold lines.

Use bending brake for alum. and steel prototypes.

Messier List
Dark Matter
Extra Hints
EZ No Tripod
Astro Hints