i am making a small crucible and i wanted to know simply, if masonry cement is qualified to accept temperatures of over 3000 degrees if it isnt then is there one i can make at home from realy simple to find materials?
i would think that concrete would crack very easy at those temperatures.
No you need a lime mortar. Thinking about it, years ago we used to brick up kilns for firing and used a mixture that resembled liquid chocolate. When the firing took place this would then turn solid. What it was called I couldn't say, but if you have a brickworks near by they'd be able to help.
