instructions used were those from Pete's home made violin tools FAQ from
http://home.att.net/~PeteSchug/homemade.html. The timber used was 1"
thick doweling cut into pieces approx.1 1/8" long, then each piece was end
faced in a lathe and lined drilled with a 1/4" drill to a finished length of
1" each. The bolts are standard 4 1/2" x 1/4"
carriage bolts, the washers are full size but could be of a smaller diameter
if desired and the middle faces are lined with good quality automotive cork.
I made a total of 36 which is sufficient for violin and viola work.
Things to note:- 1" diam. is the maximum I would recommend, as when using
this size at the centre bout they can impinge on the arching and cause
marking, particularly if the edges are left sharp and thin or no lining is
Also, the outer edges of the wings on the wing nuts need grinding or filing
back slightly, otherwise if the clamps are touching they can touch the
adjoining ones when being tightened.
Whilst I had the use of a lathe for very accurate finishing, as long as a
little care is taken during the cutting and drilling the only tools required
are a drill (preferably a drill press), grinder or file, suitable glue and
the raw materials, as ultra precision is not needed for usable clamps.
page was last updated
on 07 April 2004