When mixing the microsphere filler, you should either wear a respirator or, at the vary least, a mask. The microspheres have a tendency of becoming airborne very easily while dispensing from the bag ... and, in particular, while being mixed into the epoxy resin. I chose to wear a mask and mixed the microspheres outside, at arms length, with my back to a steady breeze.
I was hoping to get a thin even coat on the entire lay-up but quickly realized this will be at least a two step process because applying the filler in one area would put a gouge in another area so it was necessary to just fill the big stuff this time around. After a light sanding it will be easy to add filler to even things out and tweak the fairing into shape.
Right side of canopy fairing lay-up after applying a mixture of microsphere filler dyed black.
Left side of canopy fairing lay-up after the first slathering of microsphere filler.
Did not really work on the fuel tank, but did clean it up a bit with Acetone (not on the joints). Also took the time to finish cleaning the Clecos. Yesterday, they were quickly wiped off and just dropped into Acetone to soak. Today I used a rag and finished with the clean-up.