CONTROL HORNS Drill

[Verne Koester]

Larry,
Are you talking about using a Forstner bit on balsa?

Verne


----- Original Message -----
From: "Larry Caldwell" <larryc at bscn.com>
To: <discussion at nsrca.org>
Sent: Saturday, September 06, 2003 12:42 PM
Subject: Re: CONTROL HORNS Drill


> A Fostner bit works well too, and cuts a hole with cleaner edges than
> does a hole saw.  You still need something behind the wood you are
> drilling.  I got mine from Lowes.
>
> Larru
>
> ronlock at comcast.net wrote:
> > One more alternative -
> > You can drill holes for dowels with a hole saw.
> > It still takes a wood backing and maybe the masking
> > tape as well on the back side of the drilled hole.
> > Personally, I use 5/8 inch dowels in lieu of 1/2.
> >
> > Ron Lockhart
> >
> >>Sorry....typing more than thinking ;-)
> >>
> >>I put a piece of masking tape on the outside of the sheeting of the
surface
> >>being bored.  If it's relatively sawdust-free, and good tape, it will
hold
> >>the fibers together as the brass tube cuts through.
> >>    I drill mine in the drill press, using the shucks on the press
table,
> >>drilling from the upper surface to the lower, so the tape is on the
lower
> >>surface, and against the shuck.
> >>    Holding moderate pressure to the surface/shuck, the drill press with
the
> >>tube will go through it like butter, with only light pressure needed.
> >>    Using this technique, one can do both ailerons, both elevators, and
the
> >>rudder in about 5 minutes, if being slow.
> >>    Hardwood dowels are coated with thin epoxy, inserted flush with the
> >>sheeting.  If you're cautious, and pre-measure and sand the angles,
these
> >>can be very cleanly glued in place.
> >>    After they're cured, drill centers in the same shucks for the 6-32
bolt.
> >>    Works just dandy.
> >>
> >>Bob Pastorello, Oklahoma
> >>NSRCA 199, AMA 46373
> >>rcaerobob at cox.net
> >>www.rcaerobats.net
> >>
> >>
> >>----- Original Message -----
> >>From: "Martin X. Moleski, SJ" <moleski at canisius.edu>
> >>To: <discussion at nsrca.org>
> >>Sent: Wednesday, September 03, 2003 7:58 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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> >>
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> >
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> > .
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