Well I shot exterior satin on the WB test, and interior satin on the Lacquer test. Both went down well with windshield washer fluid and Floetrol added. Shot a milk-like viscocity down for 3 light coats... covered well and lays flat. I like the finish of the exterior better. The interior satin looks nearly "flat" rather than satin.

Both tests gained an additional .2oz from the latex coats... same as from glassing. That puts me at .4oz over balsa weight. This means each square foot should gain 1.1oz going from bare balsa to glassed & latexed (no weathering yet). This includes extra primer for panel line detail and raised glue rivets.

Again, using 20sq ft as an estimate of surface area for my plane, it should only gain 22 ounces to glass and paint using either of these 2 techniques. Throw in a few extra ounces for hatches, and misc small details and you're still around 1-1/2 to 2 pounds total, which should really help keep the wing loading down. Also, 20 sq ft is probably more than I'll really have, but better to err on the high side when estimating this.

I'll do some simple weathering, give them a few days to fully cure and then do some gas testing on them. I may also do some "stress tests" to see how they hold up from a strength standpoint.

Neo