"Veeduber" wrote in message
...
Only trouble is, put the top skin on, the inside of the wing is
blacker than my fingernails.

Tried poking various light-wands through the hole... nada.

Not for preflights, but it is amazing what you can inspect with one of
those cheap itty-bitty TV cameras glued to an appropriately long stick. Even
the inside of a 50' glider wing is possible. You can even videotape (or DVD)
the results for later reference.

Vaughn