Finally good to drill out the 3/16″ holes for the canard attachment. The question is how to you drill straight ‘square’ holes in this position? Yes we all know the holes get drilled out later for AN4’s.

As I had a nice long drill bit the answer was to make a guide as you can see in the pics. I’ve just bondoed it on to the side. I did clamp a block on F22 as you can see in pic 1 so I had somewhere flat to put the set square for lining up the bit as you see in pic 2.

Yeah I took most of the day rechecking the canard position to drill these two holes. I’m happy enough to take the small victories.

Jig in place

Lining things up

Drilling a straight hole