168 hours Cleaning VS Parts

Pic of the Vertical Stabilizer rear spar and reinforcement bracket after dimpling and countersinking the 22 holes at the bottom which require AN426 flush rivets, since this part of the spar will be flush mounted the last bulkhead of the fuselage later on. If you click on the photo to enlargen it you will also note the score marks on the web of each part, which came from the scotch brite pad that was used to prep each part for priming. Lots of acetone washing with a microfiber cloth remains in order to clean each part thoroughly for priming. Parts will be handled with rubber gloves during cleaning to prevent the transfer of oils from your skin to the aluminum, which may cause problems with the primer adhering to the metal properly. The countersunk holes are a little bit deeper than the dimples in the spar to allow each dimple to seat correctly and allow the parts to lay flat against each other.