[NSRCA-discussion] Sheeting built up wings...old school!

[Atwood, Mark]

Regarding weighing down the top side, I’ve had very good luck using Lead Shot.   I double bag it in Large Ziplocks (trust me on the double bag… if one splits, it’s a DISASTER.)  I typically have about 10-15# in each bag and probably use upward of 100lbs when all is done.   It forms to fit the curve of the wing and holds the sheeting down nicely especially if you’re using an expanding glue like Gorilla.    If you don’t have a form, I’d probably not use Gorilla for that reason and stick with titebond.    A good piece of dense memory foam will support the underside.   Avoiding twists without building a jig though is pretty difficult and will depend a lot on how you secured the first side.

-M
MARK ATWOOD
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On Dec 14, 2020, at 9:31 AM, Don Ramsey via NSRCA-discussion <nsrca-discussion at lists.nsrca.org<mailto:nsrca-discussion at lists.nsrca.org>> wrote:

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Richard,
Maybe my last post was a little simplistic.  Here's more detail:
1.  Glue up panels that fit the skeleton.
2.  Sand the panels so at least the outside of each panel is smooth.  Do this before gluing the panel to the skeleton because the skeleton does not provide underlying support to support sanding as well as a solid structure.
3.  Glue the first side with CA or your choice of glue.  Wait for glue to dry.
4.  Glue the second side with a slow drying glue (in your case maybe poly glue) so you can fit the side easily. Weight the side to keep it the entire structure straight.
5.  Add the remaining components, LE, TE, root, tip, etc.
6.  That's it.

Don

-----Original Message-----
From: NSRCA-discussion [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Richard Lewis via NSRCA-discussion
Sent: Sunday, December 13, 2020 9:20 PM
To: General pattern discussion
Subject: [NSRCA-discussion] Sheeting built up wings...old school!

Alright, let’s see if this list is still alive!!

I’m building a classic 40 sized MK kit.  The wings are fully sheeted.  There are no construction aids such as tabs, cradles, jigs, etc. for the wing construction.  I’ve got the wing skeleton framed up and ready to sheet.  The wing is tapered thickness and the top is flat span wise giving the wing a slight dihedral.

So the question for the builders is...What’s the best method/trick to sheeting a built up , fully sheeted wing structure?

Thanks in advance!

Richard Lewis
Sent from my mobile device.
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