Re: [CAD_CAM_EDM_DRO]Backlash & Wobbly Spindle on my Bridgeport

If you cannot find a center drill small enough I like to take a regualr
jobber length drill and cut it off so only maybe a trun or two of the flute
is left, then resharpen. This way when you chuck it in your drill chuck at
most a quarter inch is sticking out. Makes for a lsightly stiffer drill than
a full length and gives you the size you need instead of huting for a center
drill that is to big anyway, but I do believe I have a few center drills
that the starting section is under .110, would have to go measure to be
sure.
Brian A.

----- Original Message -----
From: "baumanro2000" <rsba1@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, April 26, 2002 8:59 PM
Subject: Re: [CAD_CAM_EDM_DRO]Backlash & Wobbly Spindle on my Bridgeport


> --- In CAD_CAM_EDM_DRO@y..., "Alex Canale" <alex.canale@r...> wrote:
> > The drill can go .110" deep, and no I didn't use a center drill
> because I
> > couldn't find one that small.
> >
>
>
> Just curious if you make it a practice to not center drill before
> drilling? To properly locate a hole for drilling seems like it must
> be center drilled first unless I missed something.
>
>
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