If you glued the jig blocks to the bench top and to the aileron cores, as
directed in the builder's manual, you shouldn't need to use any weights to
hold everything straight. If not, I guess you will have to weight them
down, because they do tend to warp a bit as the epoxy cures. We used large
sheets of peel ply over the entire layup areas (to minimize the later
filling requirements), and putting plastic wrap over the peel ply causes
minimal disruption to the underlying layup. Without peel ply, you may find
that the layup will look normal in the areas where bubbles form between the
plastic wrap and the layup. The remaining areas may have the surface of the
cloth weave filled by epoxy, with small ridges of epoxy around the bubbles.
No real problem that I know of, though it might take some extra sanding to
get everything evened out for filling. Some types of plastic stick tightly
to the epoxy, however, and removing it after full cure could be difficult.
Other types remove easily. I suggest that you check occasionally as the
epoxy begins to set, to see how easily the plastic comes off, and pull the
whole works loose (replacing it if needed) if it seems to be getting
permanently stuck.
Good luck!
Dave DeFord, A135
----- Original Message -----
From: Keith Tallent <ktallent@avnet.co.uk>
Subject: Ailerons - URGENT
> Just finished my first aileron layup everything went well...
> went to weigh them down in the jigs but then had second thoughts on the
best
> way to do this!
> I was just going to lay a sheet of plastic over the whole lot and put some
> large books on it but then I panicked about the plastic affecting the
layup
> quality...
> is anybody out there that can help me right now!
>
> regards
> Keith
>
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