Tonight's session started by un-cleco-ing the left Outboard Leading Edge (OBLE) wing section that I had previously assembled a couple weeks ago. The J-channel stiffener was still a little rough from the match-drilling that I had last done, so I started by deburring all of those fresh holes, and then followed up with a Scotch-brite pad on its surfaces. Then I dimpled all of those holes in the J-channel, to prepare it for eventually being flush riveted. Next, I removed all 7 of the nose ribs and deburred any of their flange holes that needed it, which was only the aft-most hole on a few of them because I had match-drilled them. Those aft-most holes were then dimpled to match the rest of their flange holes. Then I used a Scotch-brite pad to scuff the inside of the OBLE skin where the ribs or J-channel would eventually mate against. The skin was then transferred to the DRDT2 dimpling workstation and I dimpled as many of the couple-hundred holes in it that I could. For the holes that could not be reached, I had to use the close-quarters dimpling set with my pop-rivet hand squeezer tool. Then I pulled off the remaining blue vinyl plastic from the skin, and wiped down the parts with acetone and isopropyl alcohol. What's next? Time to spray some primer to add a little more protection against corrosion.