I'm making a ring clamp but don't have an example to study up
close. Could you please describe the central pivot of a
commercially made ring clamp?
Janet, if you do manage to get a copy of Charles’ "Cheap Thrills"
there are a couple of cheap and easy ring clamp designs on p. 39.
The outside clamp uses a stubby sofa leg split lengthwise and a
large brass curtain ring as the holder. Put your ring or workpiece in
the “jaws” at one end, the split leg goes through the large brass
ring and you shove a wedge in the other end to clamp down. Never made
one myself but I’m tempted to. It would take about 30 minutes or
The other clamp is an inside ring clamp. It’s a little more
complicated to describe but in practice not much harder to make. I
have made one of these and it worked nicely, especially since I
carved most of the thing with a pocket knife in the days before I had
real tools. I lost it in a move and I’m tempted to make another,
especially now that I’m a little better equipped to do so. If
you’ve got access to a wood lathe it would probably take you less
than an hour, start to finish. Double that if you don’t.