[Fab] Drill press fixed

Hao Zhang zhanghaotz at gmail.com
Thu Jul 26 00:49:52 PDT 2012


Sweet! Thanks!
On Jul 25, 2012 10:22 PM, "Andy Isaacson" <adi at hexapodia.org> wrote:

> On Wed, Jul 25, 2012 at 10:22:30AM -0700, Casey Callendrello wrote:
> > Awesome. Thanks!
> >
> > I imagine some of our duller drill bits are also pushing the torque
> > limit. Does anyone know how to sharpen drill bits using a bench grinder?
> > If so, can you teach me?
>
> I'm sure sharper is better than duller, but the first order issue is the
> longer lever arm that a hole saw brings to the party.  It's like putting
> an extender arm on your wrench, you can put a lot more leverage on that
> stubborn bolt.  Even a very dull drill bit is only a half inch away from
> the pivot.  The hole saw is providing drag a good 2" out.
>
> -andy
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