AboutPeter Coombs Expertise I have over 20 years experience in all forms of handmade jewellery, flatware and holloware in precious metals involoving forging, fabrication and finishing.
Also works in aluminium for spectacles and trophies etc
Experience Many Past/Present clients including:
Elton John/Spectacles, la Eyeworks/Spectacles & Jewellery, Lord Mayor of the City of Adelaide/Lord Mayoral Medallion, and many others
Expert: Peter Coombs Date: 1/18/2008 Subject: crucibles
Question I have about one pound of gold and 4 pounds of silver, all of which is scrap. Can I use a ceramic crucible for both? I read about the gold melting but dont know what investment ceramic is. I plan on using an oxy-acetylene torch to do this work as it is the easist source if heat for me.
Answer Hello Sam,
If you are simply planning on melting and pouring the metals, then a ceramic crucible would be the go.
Where you refer to investment , you are talking a casting mould which is a one off thing and no used for melting metal but for the molten metal to be poured into when using lost wax casting.
Oxy acetylene would be the go with 80/180 being the settings with a cutting head.
Prior to using the crucibles, I would melt borax around the interior of it, which will assist in both the melt and the pour.
