Steve,

Matt is going to levels on this stuff I have not ventured into. What he is saying is, the really light weight silkspan is really hard to handle, but it is so thin it doesn't take hardly any material to fill it. I have tried it once and bagged it, but I like the way he does it. I think I will do what he says and try it on a test piece. Using my method is a hair heavier, but is ultra easy to apply.

Let me give you some numbers that I just got today:

On each wing I added 40 grams total...including sealer, Min Wax, silkspan and primer. As you know that's lot of area to cover. That is all top surfaces with it wrapping around the end caps, leading and trailing edges about 1/2 inch, so it's a bit more than the top surfaces. Keep in mind I only added about 15 grams of primer per wing, which would be the same if we did the light weight covering. So if we take away 15 grams from 40 we have 25 grams in the silkspan and what ever we bed it with a fill it. So if we cut that amount in half we have saved about 12 to 13 grams per wing or 25 total for two wings on a bipe. Bottom line, with wings, stabs and rudder we are maybe saving 30 grams or about an oz. Is it worth it? Maybe yes, maybe no.

As always, your mileage may vary.