I finished the two crowns today with great success. The ring was black and still smoking when I took it out of the oven, no guts no glory, it was a stressful moment but it turned out nice. I hate re waxing, usually because perosity would be too bad. I am getting my copings at .4mm and now have my fcg problem resolved. Thanks guys!
I use zahns direct or indirect sprues, I don't know which it is, don't have it in front of me. It is 8ga with the reservoir in the middle. So putting it on the crown would always be the same distance.
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