> This would be ideal where the area can be kept relatively clean because the
> dielectric fluid is circulating, but as I found when I was EDMing a couple
> of
> broken taps a couple of years back, it falls over when you are in a deep,
> blind hole, the kero gets so conductive it eventually shorts out and I had
> to
> pull the electrode, move the table for access, blow the hole clean with an
> air hose, and re-fill my puddle with fresh stuff, about every 20 thou.  And
> while it did work well and the holes were salvaged, it sure was a 3 day
> PIMA.
>
> for deep holes try pumping the fluid through a hollow electrode


-- 
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