One thing that helps is to turn the can upside down and spray until it
goes clear. This clears out the head nicely. Be careful not to spray
too much, otherwise you end up running out of propellant before you
use up the glue.
Having said that, the easiest way for me to use this glue is to thin
it out quite a bit, so that the solvent is just cloudy. I place the
frame face down on the film in a frame, the film being slack enough so
that the entire frame is in contact with the film. I then place a drop
near the frame, on the outside. The surface tension draws the glue
right into the joint. If I need more stickum, I do it again.
I got this from the old indoor list, maybe Don S?, don't remember for sure.
Marty
On Fri, Aug 28, 2009 at 4:28 PM, slo_mi<slomi_at_eunet.yu> wrote:
>
>
> To my experience the best way for gluing very thin covering film on balsa
> wood frame is with a fine brush, with very thinned contact glue(glue:thinner
> = 1:10 or 1:20), when the frame lie on the covering film. As a glue I use
> rubber glue on the base of polychloropren, and the solvent or thinner is
> trichlorethilen. I go first with some point of glue outside frame at each
> rib, after that I go continual along spars,tips, and ribs. The yield of glue
> in the weight if wing is minimal, maybe up to 10 mg, but the quality of
> gluing is perfect.
>
> --- In Indoor_Construction_at_yahoogroups.com, Tapio Linkosalo
> <tapio.linkosalo_at_...> wrote:
>>
>> 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-
>>
>
>
--
Marty Sasaki
Arlington, MA, USA
http://www.martys-simple-things.com/
marty.sasaki_at_gmail.com
Received on Fri Aug 28 2009 - 19:12:51 CEST