I use a sharp pair of scissors on 1/32 and 1/64 ply. Much easier and cleaner cutting than an Xacto knife.
ORIGINAL: vicman
Pretty much summed it up there Bob, I used slo CA for my shear ribs to speed things up a bit. When I cut the shear ribs from the long strip of ply I used tin snips, again made a fast job of it. Once I had them glued in place the wing was pretty much solid from that point on. Sheeting and cap strips were short work.