The way to fix them down is to drill a tiny hole at each end of the
bubble just big enough to allow a hyperdermic syringe with resin in
,inject resin in one end till it comes out the other ,put a small bag of
sand
over a piece of peel ply cloth (to absorb excess resin )over the bubble.
when set,remove peelply and fine sand any residual resin.
This should permanently adhere the skin surface down to the substrate
gary
"Steve Hill" wrote in message
...
After my nice flight last month in Mt. Rainier wave to 24k, my wings have
turned into a blistered nightmare on the DG-400. I probably have 2,000
small
bubbles ranging from .005 to .015" tall...I've been sanding the gelcoat
down
in an effort to see if I can break through them, but I am nervous as hell
if
what I'm doing is a bad idea...Is there any chemical that will remove
Gelcoat and not hurt the substrate, or is the best method to actually just
sand till ya can't sand no more???


Anyway...my thought is to sand the wings down, but then I'm not really
clear
on what's going to keep the moisture from returning for good...it seems
like
baking the wings is a decent idea, though for now I'm not exactly sure how
and at what temperature...Anyone's input will be appreciated...again, the
worry is that if you go to all the trouble to sand things down to bare
material, is there a way to assure that the bubbles don't come back in the
future. My plan would be to re-finish with one of the PolyUrethane
systems...So, time, temp, advice or chemicals!!!!

Thanks


Steve.