I spent the last two days, primarily, finalising the Rudder ready for paint. This way I can do a complete spray of a lot of parts ready for riveting all at once.
It was definitely a task and a half to drill and countersink the trailing edge. I purchased some 2"x1" aluminium angle and created two edge clamps ready for setting the trailing edge with the tank sealant.
The process I followed was: 1. Used one of the skins drailing edges to mark and under drill one of the angles as a blank. 2. Separated the skin from the angle, and match drilled that blank to the other blank. 3. Fit the angles to the trailing edge and confirm straightness of traling edge..... NB: Some minor mismatch, however, Pretty good. 4. Took the angle off the trailing edge; edge holding well enough for dilling. 5. Cleco everything together. 6. Set the cord to dead level using sprit level and supports for stability to the table. 7. Use a right angle as drill guide to drill perpendicular to teh chord line. Worked a treat. 8. Un-cleco'ed everything deburred, set aside ready for paint.