using pizza stone? for fusing on

[bothofushk]

Hi all,,I have never used one,,but I am thinking I would still have to KW or use thinfire on it,,right?

bothofushk

[Valerie Adams]

I use them all the time! I pick them up for a buck or so a garage sales or thrift stores, cook them to just above full-fuse temp before using them (they're usually filthy), then kiln wash. I've had a few break if I ramp too fast but for the most part, they're just kiln shelves.

[Bert Weiss]

I once visited a factory that makes mullite kiln shelves and furniture. Sitting next to all those was the pile of pizza stones. They are identical to kiln shelves, and require the same separator to prevent sticking.

[bob proulx]

I also use them all the time. I have 2 I have been using for over 5 years, their still going strong.
Bob

[bothofushk]

thanks everyone,,,

bothofushk

[Georgia Novak]

The one I have is only about 1/2 as thick as my regular kiln shelves. Is this normal? Do I need to ramp up more slowly? Georgia

[Valerie Adams]

My pizza stones are thinner than my kiln shelves, too. I don't ramp faster than 400°on them now as I did break a few by ramping at 600°an hour.

[Georgia Novak]

Thanks Valerie. I have been afraid to use the pizza stone because of the thickness. Georgia

[Bert Weiss]

My common sense says that a thinner shelf would be less prone to heat shock, not more prone, just like glass...

I don't mean to contradict Valerie at all though. In her kiln 400dph may well be a good rate to ramp up. All kilns are not the same relative to this sort of thing.