I'm working on an odd project right now that involves melting down sodium chloride (salt), as well as other salts (like potassium carbonate). However, I need to buy a crucible. I came across this post from another forum that led me to be very cautious in buying the right kind of crucible.
Apparently, molten salt has a low surface tension, leading it to seep through cracks and pours that would otherwise hold water. So clay-graphite crucibles are out. I'm thinking fused quartz. Would this be a viable solution? What