Drilled the final two spar-to-spar holes to 1/4", the ones that go through all the blocks and such, about 3"+ of material. Need to be straight to within 1/32 because the pilot holes are 3/16" already. Did good on both holes. Doesn't need to be perfect because these will then be enlarged again to 5/16" and finally to 3/8", but getting good location on the holes here will make those easier.
Starting to set up for the holes through the wing mount blocks.
