Re: Flat Holes

GM4T,

Be sure to clamp the work down on the drill press. The second drill
will tend to pull the work upward. What the two drill method accepts
is that the counterbored hole for the head of the screw does not NEED
to be flat (Refer to Freds previous post).

If you grind the "counterboring" drill flat, Smoke and others advised
adding relief. Good advice, IMO.

Hope this helps.

Ballendo

--- In CAD_CAM_EDM_DRO@y..., gm4ta@i... wrote:
> You got it 100%. I only have a drill press. I think I'm going to
use
> the 2 drills method now. But if I grind flat the bottom, then the
> bottom won't have any cutting action. Would that matter since it's
> going to cut a little bit anyways?
>
> -GM4T
>
>
>
> --- In CAD_CAM_EDM_DRO@y..., dougrasmussen@c... wrote:
> > GM4T,
> >
> > Unfortunately, you didn't get much useable advice from the group.
> >
> > First off, you don't want flat bottom holes, you want
> counterbores.
> > And there are common tools which cut them for your cap screws.
You
> > won't find them at Home Depot, though. Good counterbore tools
> aren't
> > cheap, either.
> >
> > I'm assuming since your machining knowledge is limited, you
> probably
> > don't have a milling machine so the use of end mills is ruled
out.
> > You probably have a drill press, right? But you can't use end
> mills
> > in a drill press.
> >
> > The best advice I've seen for you is that from Fred. Use two
> drills
> > like he suggests. It's a very acceptable solution that's easy
and
> > the price is right.
> >
> > Doug
> >
> >
> >
> > --- In CAD_CAM_EDM_DRO@y..., gm4ta@i... wrote:
> > > Thanks everyone for their reply! I can't believe how much I'm
> > > learning from this group. At first I thought that there is no
way
> > of
> > > making my guitar bridge. But now as I gain more knowledge on
> tools
> > > it's becoming much more possible. The next thing I'm going to
buy
> > > when I go to Home Depot will be an 2 end mills: one for the 6-
32
> > > socket head cap and one for the 4-40.
> > >
> > > Thanks again!
> > > -GM4T