Oh NO!!! Not "Air Bubbles" again!
Actually, I just wanted to provide a little bit of closure on this subject
which came up a few weeks ago, by posting some photos as I promised.
They are at http://home.echo-on.net/~jpolenek/airbubbles.html
Just to re-cap for anybody who's new, I had noticed what appeared to be
voids under the fibreglass of my first bulkhead. It was suggested that this
may be surface contamination (e.g. from handling) of the urethane foam and
that it should be prepared by sanding then applying a micro slurry before
glassing. I tried this and it's great! I used this method on my Wing Lift
Bulkhead with excellent results. It takes me about twice as long to do a
lay-up because I spend a lot of time making sure the slurry job is thorough,
but the improvement in appearance and peel strength is well worth the extra
time.
Thanks for everybody's input.
Joe
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