Homebrew PCBs

--- 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