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Subject: Re: [Homebrew_PCBs] Re: Looking for a source of those RINGs on PCB drills?

From: "Stefan Trethan" <stefan_trethan@...>
Date: 2006-07-25

On Tue, 25 Jul 2006 22:28:31 +0200, lcdpublishing
<lcdpublishing@...> wrote:

> LOL!
> I can just picture me standing in front of a grinder today (with my
> bad eyesight) trying to hand grind a point on a .035" carbide drill
> bit :-) I can barely grind the .250" drill bits anymore :-(
> The more I think about it though, I am going to pick up either a
> soft-green wheel or a diamond wheel. I plan on giving the isolation
> milling a try when I get the little machine done (sometime during
> the next century). I suppose someone makes bits for isolation
> milling but I have not seen any in the grab-bags of bits I have been
> buying.
> So, in the spirit of doing everything else, why not make an attempt
> at grinding tiny bits to drive myself crazy ;-)
> Chris


You think the soft green wheel will do them? I think i got one with that
belt sander/grinder combo...
But i would not expect the runout to be anywhere near acceptable to avoid
breaking them bits...


What sort of grinder do the diamond wheels need?

ST