In this case it would be sterling silver to 999 and 10k gold to 999.Pure gold do not need Borax or other slag forming elements.
PGMs have so high temperature that you can not use Borax.
So what kind of PMs?
It is not feasible, what are you going to use the alloy for?In this case it would be sterling silver to 999 and 10k gold to 999.
So maybe I will have to cupel them first. Anyways, after cupelling, do you think the method I referred to would work?It is not feasible, what are you going to use the alloy for?
You have no idea whats inside the 10k, so if you melt these two together it might be very brittle
I knew if I read enough on this forum I would find the simple recovery solution I was looking for. Thank you and gravity works. Totally different project but I believe the four sided cone will get me in right directionWhy would you want to waste supplies in this matter?
You doing this smelting just for your self?
Crucibles can be used for more than one melt, but the flux mix you use will destroy them in time, and a Cupel can be used until the collection metal amount you used is to the absorption point.
On the other end you may need more than one Cupel to finish a large bead.
The Cupel is sized by the amount that it can absorb(I.E. 30 grams), one can tell by looks or added weight when this maximum absorption point is reached.
Just get a graphite cone mold off EBay to pour your molten smelt into, then when it cools down in there you have your bead at the tip.
If you can weld, you can make a 4 sided cone mold easy, good tip is to make it way larger than you think you need.
You dump the cooled mass of slag out of the cone mold and the break the button from the tip of the slag cone.
The point of using this cone (not a pun)is to collect the metal button via. gravity.
A Cupel would then be used to clean this button down further in the furnace by drawing the collector metal used in the smelt (I.E. lead) from the bead you got and just leave the PMs.
Your final bead is still a alloy of all the metals that were left in the Cupel.
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