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Old 2007-07-17, 8:25pm
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bhhco bhhco is offline
What, Me Worry?
 
Join Date: Jul 09, 2005
Location: Texas
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Quote:
Originally Posted by Dennis Brady View Post
.

I sell a LOT of different bead annealers and I think the lowest temp rated one on the list is designed to fire to 1700 f. More are intended to fire to 2000 F.

What makes are only safe to 1200?
Dennis, you probably know better than I who makes all the different annealers.

I'd say, off the top of my head... any annealer that used fiber versus brick, and was painted steel, not SS or aluminum, should be looked at as one probably not intended for use above 1200 F. There are exceptions I'm sure, since it then relates to the thermal transfer rate of the material and if an air buffer exists in the box.

What would make in unsafe is the flammable coating and excessive thermal transfer rate above 1200 F.

There are still many, many DIY annealers that the assembler may have omitted a step or two, regarding over temp sensing.

Me
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