Re: [CAD_CAM_EDM_DRO] Re: Help?? CNC PCB Drilling Machine

Richard wrote:

>Yes Jon, from the center out is correct. My dielectric fluid is tap
>water plus a bit of permanent antifreeze for a wetting agent. I apply
>the fluid from a 3 gallon plastic bucket through a needle valve and a
>hose to drip on the electrode business end just to flush the "dust"
>away. All I did was make a dummy do nothing bunch of islands in a
>crude fashion by manually moving the board back and forth and
>operating the up - down stepper with switches to try out the idea. I
>found no shorts between islands which is what I wanted to test.
>
>

This is really quite neat! The problem with mechanical PCB milling is
that it makes a lot of dust and noise, and eats up VERY expensive carbide
micro-milling bits.

Did you use .5 mm mechanical pencil leads?

I will have to try this sometime!

Jon