to "Handyman" Index page.
Backstop Collar can be clamped at various positions on the Backstop Bar
to facilitate repetitive bending where a series of bends are to be made
all the same distance from the edge of the workpiece.
These collars can be made from the same material as was used to make the magnet body poles, namely 50 x 16 bright mild steel.
Note that the large hole (for the backstop bar) is deliberately made
close to one edge of the block. The thinner material at the edge then
acts as a hinge to allow the hole to easily change diameter a little to
facilitate clamping and loosening of the collar.
The M8 socket head cap screw looks neat if the head is accommodated in
a counterbore but the counterbore is optional; the collar will function
just as well without it.
Backstrop Collar Drawing
: Enlarged view
, PDF Drawing
page last updated: 21 July 2020