REFLECTOR: Interference drag & peel ply

[Chuck]

I read an article awhile back (10 yrs ago) saying that you could reduce drag 
by radiusing the square corners, so I used a mixture of West's Ultralight 
and resin (with a little Cabo, as I recall?) to fill along the fuselage to 
wing/strake, and the winglet to wing. I used a 1" deep socket as my guide 
and put sandpaper over it. Was easy to do and it's held up just fine.

I was told peel ply (dacron) was for soaking up excess resin and to smooth 
out layups (easier to work than bare fiberglas). Also, that you need to sand 
every fiberglas joint including peel ply-ed ones. For really strong joints 
mix up a mixture of epoxy, milled fiber, and cabo (peanut butter 
consistency) which you squeege on before you lay down the fiberglas. It 
really makes the glass stay in place even for upside down layups.