Covering glue and application

From: Tapio Linkosalo <tapio.linkosalo_at_iki.fi>
Date: Fri, 28 Aug 2009 13:34:13 +0300

Until recently I used the simple method of spraying a could of glue into
the air and pulling the frame through it. However recently my spraycan
(M3 - 77) started to produce "threads" of glue, maybe the solvents are
drying out, so I decided to start spreading the glue with a brush or
cotton pin. So I bought some Xylene to dissolve the glue into a
spreadable form.

I somewhat wondered, how the flying surfaces of my two new models turned
out to be so heavy, and really figured out the problem as my new prop
blades accumulated way too much weight while covering. For instance ( I
just subtracted) the glue on my two first F1D wings was around 75mg,
while the two new ones ended up at 120mg weight gain. Argh. I had to add
that much glue to make it feel "tacky". Obviously I'm using two much of
the glue, but I suspect that the problem is that the well-diluted glue
soaks into the balsa, and does not stay on top?

How much weight gain due to glue is acceptable? Is spraying on still
better method? Maybe, if the can does not spray properly, I should
dilute the glue and use a paint spray brush to apply the glue?


Thx,



-Tapio-
Received on Fri Aug 28 2009 - 03:38:59 CEST