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Would slip-casting the appropriate material be an alternative?(I believe crucibles are made this way commercially). I have heaps of recipes for crucible pots which would take slumping temperatures easily. Flat shelves could probably be hand-built. (I do understand that warping during bisqueing is a ...

what is the quartz inversion temperature and when does it happen? Are there two temperature points/zones?
thanks, Greg

I don't understand what you guys are doing. Is this a mold you are talking about or the walls of your kiln?
Greg

My elements are Kanthal, and the reply from the guy who supplied and wound them is, quote ".....they can touch fibre through leadouts but I would make sure spiral does not touch fibre, element will overheat. 25 mm clearance would be plenty" 25mm is close enough to 1 inch. When are you guys...

Ok, I was drinking home brew when I did the calculation, the damn calculator doesn't seem to work proper when there's a beer next to it! (it's actually0.3937.....)
smart-arse boy

when they arise

OK I'll give my elements 1cm (=1.27") clearance and worry about the consequences when the arise.!

Thanks Brock, but won't that make a hot spot and degrade the element at that point?
Greg

Can someone advise me on the distance I should keep my elements from my insulation. I'm building a top hat, fibre kiln with the elements on the top only. :?: