Well done! It is always good advice when backed by research. Thanks.
-Original Message-
From: Oscar Zuniga
Sent: Saturday, November 02, 2013 1:47 PM
To: krnet at list.krnet.org
Subject: KR> Post curing wings
Good information about post-curing. Check the heat distortion temperat
Good information about post-curing. Check the heat distortion temperature for
the foam board that you're using if you decide to post-cure. Some of the
molded polystyrene boards (such as pink Owens-Corning Foamular; blue Dow
Styrofoam) have heat distortion temperatures in the 100-105C range (2
with a
tightly closed canopy, parked out in the summer sun, could come close to
reaching that temperature?
Ed
-Original Message-
From: smwood
Sent: Thursday, October 31, 2013 6:49 PM
To: krnet at list.krnet.org
Subject: Re: KR> Post curing wings
That's also why white paint i
age-
From: Larry&Sallie Flesner
To: KRnet
Sent: Fri, Nov 1, 2013 6:50 am
Subject: KR> Post curing wings
Kinda at a loss why anyone thinks they need to post cure the glass on a KR.
+
>Because it warps if no
Kinda at a loss why anyone thinks they need to post cure the glass on a KR.
+
>Because it warps if not post cured.
>Daniel R. Heath
++
I would respectfully disagree with Dan on this on
What will warp if not post cured? I have not noticed or experienced this?
-Original Message-
From: Dan Heath
Sent: Friday, November 01, 2013 5:35 AM
To: 'KRnet'
Subject: Re: KR> Post curing wings
Because it warps if not post cured.
See N64KR at http://KRBuilder.org - Then
Because it warps if not post cured.
See N64KR at http://KRBuilder.org - Then click on the pics?
Best Firwwall Forward at 2013 - KR Gathering in Mt. Vernon, Il ? MVN
Daniel R. Heath -?Lexington, SC
-Original Message-
Kinda at a loss why anyone thinks they need to post cure the glass
Kinda at a loss why anyone thinks they need to post cure the glass on a KR.
The glass is just there to keep the foam from abrading away! The structural
loads are taken up by the wood. The KR is a wooden aircraft that is fleshed
out by foam and a wear coating of fiberglass or an even the less load
b
I disagree on the post curing process at 150 degrees F. You can certainly
cure most room-cure epoxy types quickly at 150 degrees F. To do the post
cure you have to get the temperature to the T sub g point. That is the
softening point of any epoxy. For room-cure types this varies from 180 to
It can be done with a few simple tools and some ingenuity. You'll need some
4x8 construction foam panels (the 1" pink stuff works well), a couple of
heat guns and an oven thermometer. Build a box of the foam panels big
enough to hold a wing section, suspend the wing section from the top and
place
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