Monday, June 1, 2009

Kiln firing schedule How to even out?

0645: pilots lit door open
0630: pilots upper temp 220 lower 220
0645: pilots upper 384F Lower 557F smell wax bur off
0720: pilots upper 447F Lower 594
0742 pilots upper 549F Lower 656F firing smell
0820 pilots upper 686F Lower 709F Turn on burners 0.5 blue flame
0844 Upper 1007F lower 1322F oxyprobe 0.03 move damper in 1 inch
0900 upper 1144F lower 1457F oxyprobe no reading put piece of fiber over 1/2 of burner port entrance each side to block 2ndary air.
0930 upper 1288F lower 1563F damper in another inch upped gas to 2.0 no oxy readout.
0940: upper 1388F Lower 1716F gas to 5
0945: upper 1521F lower 1985 oxy .08-.09 covered flue 1/2 increased gas to 9
1015: upper 1997 LowerOL switched to C oxy .68 redux smell
1020: upper 1123 C Lower 1378 oxy .68 cones unmelted inside kiln orange.
1030: upper 1150C lower 1405C oxy .62 cones not bent
1047: upper 1199C lower 1361C oxy .26 increased gas to 10
1055 looked at cones saw R shelf had fallen followed by left shortly after.
Turned off kiln allowed to crash cool to touch in about 4 hours.

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