[Jewelry making - Article 01310] - [Orchid] Disc Cutter Use

[Kim Griffith]

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    I have read some previous posts on Orchid re this subject but would
    appreciate some clarification if anyone is willing to help.  I have
    just bought a disc cutting set which has three circular sections one
    above the other. (most illustrations I have seen only have two)  The
    base is solid, 2nd section up has holes which correspond with cutter
    diameter, obviously the cutting surface and top section also has
    holes which correspond with cutter diameter. The cutters reach the
    base plate but have a thickened portion above top plate which will
    not allow them to pass further into the holes..obviously this end is
    the end to whack! ...so  to speak.... hope this description makes
    some sense and I don't sound like a complete idiot! So - the
    questions......... 

    Firstly, there seem to be quite widely varying opinions on thickness
    of sheet (sterling silver) which can be cut.  My tool supplier
    advises 0.8mm but perhaps as much as 1.0mm. In reading (Jewelry -
    Contemporary Design & Technique - Chuck Evans) the author advises 16
    gauge which I believe is approx 1.29mm. So I am more than a little
    confused. 

    Secondly, should metal be annealed? Thirdly, again in reading the
    referemces suggest "The cutter should be backed with a piece of
    hardwood or annealed copper to prevent possible damage to the
    cutting punch" - any advice? 

Thankyou in anticipation!

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