[Jewelry making - Article 01213] - Re: [Orchid] Making a Threaded Cap

[Matthew Crawford]

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>     I'm looking for some instructions on how to make a threaded,
>     screw-on cap (I'll be using sterling silver). Does anyone have any
>     suggested resources or a tutorial they could recommend? 

    You could find a tap and die set that's the correct size. Or, for a
    completely handmade look, you can use two lengths of same-gauge
    wire, wrapping them side-by-side around a non-tapered mandrel of the
    desired size. 

    Wrap almost horizontally around the mandrel for best results (the
    angle determines the pitch of the threads). Once you've got it tight
    and uniform, slide off the mandrel, and gently separate (unscrew) the
    two wires. Now you've got a pair of wires which will thread into one
    another...one to become the outside threads on the cap, and the other
    to be the inside threads in the vessel. This will yield a set of
    "acme"-type threads.

Matthew Crawford
www.MatthewDesigns.com
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