--- In
Homebrew_PCBs@yahoogroups.com, "Ben H. Lanmon" <bhleavi@y...>
wrote:
> > My guess is that the dremel just has too much slop for these
> bits. Any
> > suggestions.
>
>
> I use Carbide Drill Bits from Think & Tinker www.thinktnk.com
>
> Never used any resharpened bits before only new bits.
>
> Also use them in Dremel tools in Dremel drill presses and don't
have
> much problem breaking bits, about the only time I do is moving the
> board or trying to drill or enlarge a hole by hand while loading
> parts into the board and can not use the drill press. So when
> drilling by handheld dremel I use standard steel bits they flex
> better.
>
> In the Dremel drill press I have used down to .70mm (.0280") (never
> had a need for anything smaller) with very little breakage. Check
> and make sure the nut that hold the drill mount is tight, if it is
> not then it will have more play in it, allowing the drill mount to
> move when you apply presure.
>
>
> Ben
I use one of those $39 drill presses from Harbor Freight. It spins a
little slower than I'd like (only ~3k) but I don't break bits anymore.
I use resharps all the time, never seen a specific problem with them.
-Denny