RE: [CAD_CAM_EDM_DRO] cheap edm tap buster?

I did mean after one has a CNC mill to add it all to.

Mine has 0.64 micron resolution, though I normally use a step multiplier
which gives me 2.5 micron resolution, but that ought to be sufficient.

My main axis are much better than half a thou backlash, not sure about the Z
haven't accurately measured that yet.



As to the vibratory ones, this sounds like one of those vibrators for small
stick welders. They simply use a big coil of wire through which the
electrode power runs. If the current goes up, it withdraws the tool, on the
welder they are designed to stop the rod sticking. I've used one and two car
batteries to weld when I did'nt have a welder.



Regs Mark



Dr. Mark Vaughan Ph'D. B.Eng. M0VAU

Managing Director

Vaughan Industries Ltd, reg in UK no 2561068

Water Care Technology Ltd, reg in UK no 4129351

Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
Phone/Fax 44 1872 561288

>Well, it may appear simple,. but that was because I already had a
>Bridgeport mill that
>I CNC'd, and it has a ballscrew on the Z axis with .000025" encoder
>resolution.
>(That's not a typo, 25 micro-inch per encoder count.) The .001"
>backlash in the
>quill coupling is a major annoyance, you have to back out quite a while
>before actual
>motion breaks the short. I usually feed at roughly .0001" per second,
>and I do rotate
>the electrode with the machine's spindle.

>Jon

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