[TheForge] More Drill Press stuff

[Washington, Aubrey O.]

Andy, right you are, as usual.  Even my fish filet drill press will drill a 1" hole in 1/8" increments.

Aubrey

________________________________________
From: theforge-bounces at mailman.qth.net [theforge-bounces at mailman.qth.net] On Behalf Of Andrew Vida [osan at netlabs.net]
Sent: Tuesday, December 04, 2007 11:43 AM
To: Sponsored by ABANA
Subject: Re: [TheForge] More Drill Press stuff

Aubrey - a rule of thumb is just that - it is a guideline, not an
absolute.  I believe I did mention that it depends on the specific
machine in question, e.g. how much power, the strength of the various
parts including the chuck.

One also has to take into account the method of drilling - specifically
the depth of cut.  If you have a 1/2" chuck, drill and 1/2" pilot and
then expect to go directly to 1", you will probably have problems.  If
you open the hole in more reasonable steps, say 1/8", things should go
far more easily. Technique is a large part of the equation for success
in machine work, just as it is in blacksmithing.

Washington, Aubrey O. wrote:
> Andy,
>
> I'm still a little confused about your rule of thumb.  I have a 16-spd.

  floor model "fish filet (TM)" [1] drill press with a 1/2" chuck that

would really struggle drilling a 1" hole without stepping up to it with

smaller drill bits.  And, I can get it down below 200 rpm.  If a just

have a few large holes to drill, I use my 100 year old hand cranked

post drill.  Does your rule of thumb only apply to the industrial models?
>
> Aubrey
_______________________________________________
Manage membership or unsubscribe at:
http://mailman.qth.net/mailman/listinfo/theforge
theforge mail list group photo site is
http://www.photoaccess.com
Login:  blacksmithblacksmith at hotmail.com
password:  anvil
___________