Started layout of aft wing spar channels. Cut ends of channel stock to size (about 1/4" length trim, plus 3/16" angled trim) after laying out the rib hole patterns (need square end to measure from, but end to measure from also gets the 3/16" angled trim, so lay out rib holes first, then cut the channel stock).
Aft main wing spars laid out.
Plenty of big notes on the stock to keep it straight.
