[Jewelry making - Article 01014] - Re: [Orchid] Magnesia soldering block

[Donald Allen]

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    	I worked with an number of materials, in efforts to form soldering
    jigs for different projects, over the years, as my focus was on metal
    fabrication through construction and for embellishing direct metal
    carvings. I did some sourcing on refractory materials used in
    production soldering, about 20 years ago, in order to broaden my
    abilities and options in structuring supports for soldering. Since
    much of this activity is carried out in Providence, RI , I began
    calling around to see what I could find.  I found in some cases
    graphite was machined for this purpose and probably the most
    durable), at least, at that time. It acts like a heat sink, on the
    down side. I further found a refractory material similar to magnesia
    ( although it would hold the work much better ) that one could set up
    ones work in. After the work was set up, the soldering jig was
    saturated with a liquid that hardened it; after it dried. It was a
    reusable jig material. I can't remember who I got it from or what it
    was called. I know it worked and that it was used in production
    soldering; back then. I would think that if one were to source out
    refractory materials in the Providence RI area, and ask about their
    applications for hard soldering/brazing in  gold, and platinum and
    who's who in that field, at the same time, it could yield some good
    results. Also around the same time, MJSJ had it's bi-annual show and
    at that show was a seminar on constructing soldering jigs. When I got
    to the show the seminar was full, so I didn't get to go, I heard it
    was real good,  I have a feeling they would probably offer to do it
    again if they thought it would be in demand. They could probably help
    out with refractory sources, as well. 									 

    DMA 

    PS/ I began Faceting when I was 64, It never crossed my mind to
    consider age as a factor.  I do, occasionally, check to see if I'm
    still breathing, when I get up.  I hope whoever was worried about
    it, will find some comfort in that and keep on faceting.


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