I have a question to pose for all. I have been hand-fabricating
silver for some time, but have just decided to take the plunge and
add some cast pieces/elements to my repetoire. Here is my question:
I have two pieces of 1000 year old bronze pieces of jewelry that I’d
like to make exact replicas to wear. They are both in relatively
good condition, missing only a portion of the pin on the back on one
and an attachment ring on the other. I know I’ll have to recreate
this part of the pendant missing the pin, so basically I’m dealing
with a flat backed piece. The other is hollow (but with no back).
Adding a attachment is no problem.
I’d like to make a mold, make a wax of it and then cast them in both
bronze and in silver.
What’s the best approach? I’m concerned about several things:
how do I attach a sprue that will withstand the mold making
process (rtv or vulcanized) but not damage the piece? (I don’t want
to solder a rod to the pieces!_
what can I safely put on the pieces as a release that won’t
damage the patina of the originals?
I’m concerned about nicking the original when cutting the mold
due to my inexperience. Would you recommend see-thru moldmaking
materials? If so, what product?
As always, I appreciate any advice/help.
Keep up the good work!!