Tom, the deposit IS from gas and about .003" (.076 mm) in a single 2 day run. I have nitrogen flowing to protect, but the main box will always bleed some gas. Hard to seal at that temperature without sinking the boat. Rebuilding the supports is a long, expensive and painful process. Finding a...
Is there any material/s that will handle CVI furnace temperatures (1250 C) and will either repel carbon deposits or react with it to create a compound that is not electric conductive? Trying to contain power to the heating element without shorting it to the base/ground through heating element...