If you are making multiple copies, you are better off continuing
to do it this way. The mold maker can make a mold directly from
your silver model, whereas if you made a wax model, it would have
to be cast in silver and then the mold is made. This also means
an additional shrinkage from your original piece (2 processes = 2
shrinkages, rather than one). I usually use white metal models
when I make multiples (like Rick, I also worked in the R.I.
jewelry industry) and for one of a kind pieces I use wax.
I would also suggest that you CAN make a piece in wax (or most
ANYTHING else) and make a production mold from it and retain the
original wax or what ever if you would use one of the numeroud
RTV (Room Temperature Vulcanizing) rubbers that are now
available. We have heat vulcanizing equipment and rubbers (both
silicon ((less shrink if you can control the temperature
closely)) and the regular rubbers) but we use RTV materials
exclusively for our molds (occasionally I will make a vulcanized
mold for a person who ""demands"" it). The RTV's do not require
a vulcanizer, have basically NO SHRINK, last as long or longer
than the vulcanized, some silicons can take direct casting in
pewter, right into the mold, they are easy to make, fast, most
all are self releasing, molds can be made directly from a wax or
most any other material, and on and on and on. I cannot figure
out wha there is such aversion within the industry to using
these products instead of the heat vulcanizing materials. Is it
just old habits die hard or what? I really am curious......
John and Cynthia/MidLife Crisis Enterprises
Maiden Metals/C. T. Designs/ Bloomin' Wax Works. etc. No one is
guaranteed happiness. Life just
PO BX 44, Philo, Ca 95466
gives each person time and space. It is
Ph 707-895-2635 FAX 707-895-9332 up to us to
fill it with joy.