Hi John, Dental resins will BURN! Duralay, is a resin that can be
made into models, have wax added, and can then be burned out very
cleanly and then sprued and cast. It can also be used to make a mold
for flat pieces that have only one side with detail and no undercuts.
Kerr inlay wax can be flowed into the lubricated (lubed with dental
die lube) mold. It is dimensionally very, very stable.
The pliers trick might work as long as you don’t try to solder the
piece. John you can call me (708-246-6659) if you wish to discuss it