Having decided to make an
endpin clamp to hold the endpin firmly without causing damage to it, when
shaping it to the required size, I used part of a massive 27inch X 1.25inch
bolt that I dug up in the back yard several years ago and kept, knowing that
one day it would be useful. The procedure was straight forward, being:
1. Cut a section 28mm long from the unthreaded section of the bolt, face the
ends, drill a central hole 12.5mm in diameter and three equidistant holes,
1/8inch (3.175mm) in diameter, with the centres 4mm inside the outer
2. Cut a section 3.5mm thick off one end, face the cut ends, counter sink
the centre to match the applicable shape or the endpin and then cut the
opening to match the hole diameter and bevel the inner edges to match the
depth and shape of the countersunk hole.
3. Cut another section 4.5mm thick off the same end, face the cut ends, drill
the centre hole out to 12.5mm and cut the opening to match the hole
4. Thread the hole in the remaining section with a 9/16 inch UNF tap.
5. Make a stud by cutting an unthreaded 12.5mm diameter bolt to a minimum
length of 30mm, cut a thread the full length, counter sink the end to match
the shape of the endpin outer face and glue a rubber lining to it.
6. Counter sink the three holes in the outer face of the first section cut
off, to match the counter sunk heads of the joining screws.
The three sections were then joined together using 3mm (approx.)
machine thread screws and nuts, and painted, to finish the job.
Original bolt that parts were cut from.
From L to R:
Retainer, spacer, body, securing bolt, joining screws.
Finished tool, assembled and painted.
page was last updated
on 26 January 2006