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thrice fired? (orton cones after interrupted firing)

updated wed 9 mar 05


Arnold Howard on tue 8 mar 05

Orton says that if a firing is interrupted below 200 degrees F. from
maturity, the cones can be re-used. If the cones are fired to within 200
degrees of maturity, they form a hard shell and should not be re-used.

It would be interesting to experiment by placing partially fired cones next
to fresh cones.


Arnold Howard
Paragon Industries, L.P., Mesquite, Texas USA /

----- Original Message -----
From: "Snail Scott"
Whatever the process,
> my experience with 'cone freeze' confirms your
> observations: cones can only be reused if they never
> got above very low temperatures the first time.