[NSRCA-discussion] Aileron cut-off

[J N Hiller]

I use a 10" hollow ground 'plainer blade' which makes a smooth cut, and set
it as high as it will go. The over-cut on the opposite side is no more than
1/4" beyond the inboard relief cut. I cap the inboard end of the aileron
with 1/4" and the wing with 1/8" and plan just under 1/16" clearance gap. U
stop cutting at the first line and trim the relief material manually. The
remaining over cut is just filled with a sliver of soft balsa pressed in
without glue.
I still have the un-trimmed, un-cut opposite side shuck but the panels are
finished except for adding tip blocks and capping the flying surfaces for
hinging. The shuck cut off with the flying surface is used to support it for
adding hard points and adding the hinge centerline. After sanding the
capping material flush with the surface I apply centerlines as accurate as I
can to both the flying and control surfaces. I cut the hinge slots before
beveling to insure a minimum offset. I have found no better way than to make
the knife cut on the centerline and of the surfaces are misaligned by .010"
a new hinge slot is cut. Less than .010" can usually be sanded flush after
hinging.
Taping the hinged control surface back on before beveling aids in shaping
the tip blocks and aligning the stab half's when joining. Beveling is the
last thing I do after adding dowel hard points and drilling them for the
threaded control horns. It's easier to control the offset to insure the
connection is on centerline for cable connections.
Yes the cutting is straight and fast requiring no additional dressing prior
to capping and there are a lot of cuts to make.
Most of you already have a preferred procedure and this may be excessive
information but construction goes better with a plan.
How I do it.
Jim Hiller

-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Mark Atwood
Sent: Thursday, January 31, 2008 6:57 AM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] Aileron cut-off

What's the bottom of the wing look like?  Doesn't the blade end up cutting
pretty far past the end point on the bottom side?

Also, and this may just be me... But I use the shucks a LOT throughout the
building of the plane.  Both for keeping the wings from getting damaged, but
also for any drilling and sanding so as to hold the wing square.  I'd hate
to cut up my shuck at that stage.

I must say though, it looks like you get a very straight, very clean (and
I'm guessing VERY quick) cut.

-mark


On 1/30/08 9:58 PM, "J N Hiller" <jnhiller at earthlink.net> wrote:

> As promised last week, here is a photo showing how I cut ailerons etc.
from
> sheeted foam core flying surfaces using a 10" table saw.
> The wing panel is positioned on top of a 1/4 x 14 x 36 plywood sheet with
a
> key attached to the bottom that slides in the table grove.
> If anyone wants a full size photo let me know and I will send it direct.
> Jim Hiller
> _______________________________________________
> NSRCA-discussion mailing list
> NSRCA-discussion at lists.nsrca.org
> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion

_______________________________________________
NSRCA-discussion mailing list
NSRCA-discussion at lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion