[Jewelry making - Article 00360] - Re: [Orchid] Mokume Torque Plates

[James Binnion]

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>     During some recent mokume tests I used stainless bolts, I have been
>     able to use them more than four times.  I used a coating of kiln
>     shelf wash on the bolts. The bolts seem to be in good shape visually
>     and they will still hold the plates.

    While stainless bolts will last a long time they have a major
    drawback. Their thermal expansion is greater than almost all the
    metals you would want to laminate. So when you heat them up they
    actually reduce the pressure  on the laminate, not a good thing.
    Stick to plain old grade 5's or look to the more exotic nickle super
    alloys but stay away from stainless bolts. 

Jim Binnion

James Binnion Metal Arts
Phone (360) 756-6550
Toll Free (877) 408 7287
Fax (360) 756-2160
http://www.mokume-gane.com
jbin AT mokume-gane.com
Member of the Better Business Bureau


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