I cast with gold scrap and have been using an additive called "
Majic Cast " to do away with oxidation problems. The
manufacturer recomends using 5% added to the metal, but I only
use 3% and get very clean results. I'm very happy with the
results, but not the cost. A bottle costs about $35. for majic
I use copper-phos, a deoxidiser. Used by Philip Baldwin who makes
all thos wonderfull alloys and bimetals at Reactive Metals.
Get it in tiny pellet (or shot) form from a foundry supplier as
they use it also in bronze castings (if it’s not already in the
I use a tiny amount (less than 1%) 20 sec before pouring. Too
much, though, and the metal’s short. Just remelt, as the phosphorus
just keeps on depleting itself, getting oxides out from right
inside the melt. Fluxes work best on the surface only.
B r i a n � A d a m J e w e l l e r y E y e w e a r �
@Brian_Adam1 ph/fx +64 9 817 6816 NEW ZEALAND
http://www.adam.co.nz/workshop/ NEXT ONE - Queenstown Mar11 to Mar18 '98
http://www.adam.co.nz/ruthbaird/ across the bench from me