[NSRCA-discussion] Foam Wing Cutting

[J N Hiller]

I can’t answer your question directly but I have used a lighting dimmer
switch for many years. I Added a 300 watt light bulb in series to load the
dimmer to desensitize the adjustment. The dimmer runs at about 75v with
about 14volts across the cutting wire. I use a $3 digital readout voltmeter
to adjust the cutting temperature and record the settings for each cutting
bow (different wire lengths) future use. All the cores I cut are tapered and
I use a single template pivoting the bow / cutting wire near the extended
leading and trailing convergence point. The cut cores are straight and twist
free requiring only one person (no cutting machine) to guide the wire over
the template. If you or anyone else would like more info contact me offline
and I will send photos and detail info.
Jim Hiller
jnhiller at earthlink.net <mailto:jnhiller at earthlink.net>



-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of jimmy graver
Sent: Wednesday, December 26, 2007 7:35 AM
To: nsrca-discussion at lists.nsrca.org
Subject: [NSRCA-discussion] Foam Wing Cutting

I was wondering if I could get a little input. On the NSRCA web site there
is a foam wing cutter controller and I was thinking of
building it to try my hand at cutting my own wings. I never did this yet,
always built balsa frame up. It will open up quite a few new
designs for me. I was thinking of building a Boxer but I have to be able to
cut foam. So any help would be appreciated. Did any
of the people on the list build and use one? If so how did it work? Any
other controllers better? You can either put your reply
on the list if you think there is an interest or send me a private email.
Thanks for you help Jimmy.
email: planedoc at ptd.net <mailto:planedoc at ptd.net>
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