Spent most of the time getting the countersink bit dialed in. Still think I need to go back and readjust. The spar and stiffener still don't seem to mate up with a close enough tolerance. Believe I need just one or two more clicks on the countersink stop.
Started to rough up the HS ribs in prep for paint. Using a gray Scotch Brite Pad. More to do on this.
Katie and Jeremy dropped by to work on the paint booth. Must take a picture tomorrow. It's looking GOOD. Plastic is on and top down ventilation fan/filter is mounted.