I dimpled all of the nose and main ribs for the right HS. I set up my pneumatic squeezer in my vise and this was easy to manage the trigger on the squeezer. I had to use my vise grip dimpler to get the front holes dimpled on the nose ribs.
The spars are thick enough to countersink, so I set up the countersinking cage to the right depth. I then put them in my large wooden bench vise and started drilling out the countersinks along the spar edges.
