I am having some trouble with lost wax casting. I am fairly new to
this and have had some great successes and some puzzling results.
Tonight I casted two flasks and both had major problems. One bracelet
had many pit marks and what looked like large deposition of
investment on several places. The other was a beautiful piece except
towards the end of one side of the bracelet the silver looked like
it had blown out. It blew out onto other pieces I had sprued in the
same flask. The funny thing is it blew out i n one place, but the
silver flowed right to the end (and there was no problem with spruing
on that piece.
The bracelets were made using 12g sheet wax, with some red modelers
wax on the second one. I use an acetylene torch with sterling silver.
The silver flows without a problem.
Thanks for any ideas on this.