Finished right Horizontal Stabilizer attach angle. Used rough 3m sand paper disc 80 grit to get it close. then 3 different Scotch Brite discs brown (coarse), maron (medium), and blue (very fine). It took a long time to get it down to size. I probably left too much material on when I cut it on the band saw. The piece also got very hot. A good pair of leather work gloves helped me hold the angle when it got hot from all the sanding. I used a dial caliper to check the dimensions as I worked to make sure I didn't take too much off.