[Jewelry making - Article 00290] - Re: [Orchid] Transparent soldering pad

[Robb]

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    For many years a means of assembling products with multiple overlays
    has used slide projectors. 

    The slide projector was placed overhead and at 90 degrees to the
    working surface. The slide with the proper layout is focused on the
    working surface. The projector lens is zoomed to the proper
    dimensions then the lens is refocused and checked again. 

    How to do this. 

    A bracket holding the projector is made from 1 1/4 screw pipe. 4 hole
    screw flange is screwed to a piece of 3/4 plywood. The long piece of
    1 1/4 pipe 3 or 4 foot long is screwed on. Now get 2 set collars (
    round rings with set screws to place on machined steel shafts ) which
    are available from a GOOD hardware store. The set collars are
    fastened ( I would weld them ) to a piece of steel, like 1/8 in plate
    ) big enough to hold the projector. Now mount the slide projector. 

    You need a slide to project so - Remove the slide projector, Fasten
    the 35 mm camera, manual single lens reflex, with a good macro lens
    to the same plate that the slide projector was mounted to. Light the
    drawing you want to project with 2 swing arm lamps, one on each side.
    Use asa 100 slide film. Focus and shoot. If your camera has a shutter
    self timer Use it. Keep still while you are taking the shot. 

    You also have a copy stand as well. This is a one time fix - my
    favorite kind. 

    {old Argus slide projectors are good for this. Check for them on
    eBay - they are built like bricks and are not expensive.} key words -
    Manual slide projector 

    This technique has worked in industrial environments 24 hrs day, 6
    days a week. 

    Contact me at texeclectic(at)cableone.net if I need to explain
    further 

Robb.

 
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