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

Hi Jon, List,

A neat idea, but I'm wondering about the "carbon tracks" which usually
accompany arcs on PCBs. This could render a board useless.

Might be a little to keep the board "grounded" as traces are isolated.

Anyone ready to try it? I'd like to hear the results!

Alan KM6VV


Jon Elson wrote:

>
> 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
>