CONTROL HORNS

[David Wartel]

I've been successful preventing tear-out by using a sacrificial piece of
balsa sheet on the bottom of the piece being drilled with the sharpened
tube.

----- Original Message ----- 
From: "Martin X. Moleski, SJ" <moleski at canisius.edu>
To: <discussion at nsrca.org>
Sent: Wednesday, September 03, 2003 8:58 PM
Subject: Re: CONTROL HORNS


> --On Wednesday, September 03, 2003 5:43 PM -0500 Bob Pastorello
<rcaerobob at cox.net> wrote:
>
> > Masking tape on the back side of the tubing drill prevents the tear-out.
>
> Bob, with a round tube, I'm having trouble picturing the "back side."
>
> Do you just mean to wrap masking tape around the tube near the cutting
> edge?  A depth stop?  Masking tape on the back side of the balsa being
> cut?
>
> Thanks for clarifying.
>
> Marty #2874
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