Skinned the bottom of the left wing. It went a lot faster than the right because I had a better idea of how much epoxy/micro balloon slurry to mix and how much straight epoxy to mix. And I had a better idea of working time, so I didn't feel like i had to rush, and I knew what tools I would need and had them ready to go. I tarted putting the slurry on the foam about 4 pm on a Sunday and had everything up through the trailing edge straight edges clamped by 7:30ish. I checked on it a couple of times over the next few hours before shutting it down for the evening. This morning I went out and removed the clamps and straight edges, and knife trimmed the TE to the aluminum I beam fastened to the bottom and trimmed the inboard and out board ends roughly. I will go ahead and cutout and skin the wing bolt access hole while the wing is upside down and easy reach, and then let this all cure another 24 hours at least, before flipping it upright to prep the topside for skinning.