I am very interested in one of the goldsmiths most useful
tool...the bench pin. Is this about the modifications
to a bench pin on your site, or must I buy your videos?
Purchasing DVDs will be helpful. Or one can develop a habit of using
pin by self-imposed discipline. There are no specific modifications.
It is a way of thinking and practice. DVD(s) simply would provide
visual ideas and approaches. Let me expand on that.
Case 1: Simple piercing. We place metal on top of the pin. Why ? The
downward force generated is counter-acted by the pin. Not much effort
requires from another hand, except preventing side-by-side motion.
Case 2: Drilling a hole. The forces are rotational. If piece is any
shape but round, simple bringing in contact with pin along shortest
distance from center to the pin, solves the problem. If piece is
round, it is still possible to do by maintaining contact with the
pin. But intelligence from the drilling hand is required. Low RPMs,
holding it straight, and etc.
Case 3: Filling. Forces are in the direction of filling. A lot of
times it is possible to file simply utilizing friction between
holding hand and the piece. More holding power is obtained by holding
the piece against the pin. Small pieces require some pin modification
like a slot or a groove.
There are many other uses of bench pin like stabilizing tools during
operations and many others. The pin modifications are on individual
basis. There is no way to describe it all. It is precisely the case
when a picture worth a thousand words.
One can discover all these and many other techniques on his/her own.
After all, I did and many others. I remember the times when it was
easier to pull goldsmith's fingernails than his secrets. So it is not
necessary to purchase my DVD(s) or any other educational material. If
one has enough time and patience, everything can be re-discoverd at
one's bench. DVD(s) simply make it easier and more time efficient.