[Jewelry making - Article 01188] - Re: [Orchid] Hip flask

[David L. Huffman]

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>     Here is an interesting question: does anyone know how to make a hip
>     flask lid?

Hi Richard;

    Here's a suggestion, one that I've used on occasion.  Find a plastic
    bottle with a cap to match the size you'd like to use, such as a
    shampoo bottle, etc.  Cut the threaded part off the bottle, and sprue
    up that part and the cap too and cast them.  Then you can fabricate
    the bottle and solder on the threaded top and the cap should fit. 
    You'll probably need to find a sheet of neoprene or rubber to make a
    disk to fit up in the cap as a seal. The next option would involve
    taps and dies.  You'd need a pipe tap, quite a large one with coarse
    threads, and a bottoming tap, and the matching die. You'd need to
    have some pretty thick walled tubing of the right diameters to do
    this.  Now another suggestion, which is closer to the way this thing
    would have been historically accomplished, would involve using
    threaded hardwood dowels and thin walled tubing, which you would have
    to fabricate, and having annealed it, you would basically chase it in
    onto the threads of the wood dowels.  Not as hard as it sounds, a
    pair of pliers with both jaws being round and tapered works for that
    sort of thing.  The difficult part would be choosing thread patterns
    on the dowels that would allow the subsequently finished metal parts
    to thread together properly.  And here's yet a third technique that
    comes to mind.  Fabricate two short tubes which would telescope, one
    inside the other, but with difference in diameter of say, two
    millimeters.  Now get a dowel the size of the smaller tube, and take
    a length of one millimeter square wire and double it, tacking it
    together at the ends only.  Anneal it, and wrap it along the dowel
    in a tight spiral.  Cut off the soldered ends and unscrew this double
    wire into two spirals.  Sweat solder one on the outside of the
    smaller metal tube, the other inside the larger tube.  I hope you can
    visualize this, and by the way, I've not tried this, so maybe you'd
    want to take a shot at it working in brass or copper and let me know
    how it works out :-) 

David L. Huffman

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