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Post by Mark Winner on Dec 27, 2019 21:29:14 GMT -6
After 10years of use and abuse it was time to tare-down my 1st cress Kiln to the bare bones and rebuild it back to better than new. Broken bricks, broken groves that used to hold elements. Chips out of the lid where the hinges held it. Dead elements, and one broken element repaired by shucking more nicrome wire over the gap where it broke. — Thought this would take a week, took 3 weeks of work. New bricks to replace broken bricks. New elements, I make my own elements, straight wire by the pound from Duralite Nicrome 875, 13 Guage wire. New sheet mettle 28 guage for the case. Here I change the Kiln from a cress to the build of a Skutt with 3 rings each independently movable. New external case around the wire hookup. New relay one for very high amperage 600Amps. I am currently using an optical piromiter. This has cause me no end of changes and challenges. It is not a S type or K type thermal couple. But Linear so the normal (Bartlett controller/Skutt/Cress) Will not work with it. It’s more accurate but is measuring differently. The S piromiter gets to the desired temperature before the Optical piromiter as the body it is reading has more mass than the walls of the piromiter case. Once held at a temperature for a 5min they sink up. Made a new steal frame for the Kiln to sit on with wheels for moving.
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gczop
Full Member
Posts: 202
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Post by gczop on Dec 28, 2019 10:21:04 GMT -6
Good luck with your rebuild. Yes, Some of us (choose to) live in a land of technical difficulties. The kiln here is silicon carbide elements and fiber insulation. Things happen. G
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