Re: [CAD_CAM_EDM_DRO] Possibly pointless micro hole drilling in paper :)

Years ago, when I was a relative newbie in the sign trade, we often used
a machine to make paper patterns,
you'd draw or trace out the atwork full size, then using what amounts to
a neon xfrmr in a case with an insulted probe,
trace the patter to pounce the paper, similar to what would be done with
a pounce wheel.
Lay the pattern over your sign or whatnot, take a pounce pad with some
powdered charcoal(light surfaces)
or baby/talcum powder(dark surfaces) and then fill 'er in. funny thing,
with vehicle graphics I still use the same method
to ensure that both sides are the same.

erie

Graham Stabler wrote:

>I bought a plasma globe from Maplin (like radio shack) yesterday for
>almost nothing. After playing for a while I removed the globe
>leaving just the bare wire. This was always my intention as I am
>looking at making a small corona treater, anyway thats a different
>story.
>
>Take an insulated screwdriver and hold it close the the end of the
>wire and you get a spark between wire and screw driver. Place a
>piece of paper over the wire and tap with the screw driver and you
>get a tiny hole in the paper, longer taps produce larger holes. The
>smallest just look like dots unless you hold it to the light.
>
>The idea is to place an plate on the milling bed (probably insulated
>from the machine) and a pointed electrode in the chuck. Position
>some paper on top of the plate and the electrode just over the paper
>and switch the discharge with the PC. The result is CNC micro hole
>drilling though paper.
>
>Why? I have no idea, perhaps pretty pictures, perhaps filters,
>maybe higher voltage for leather marking.
>
>Graham
>
>p.s. High voltages are dangerous, don't play with them!
>
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