I started to machine countersink E-702, E-705 and E-606PP.
Using scrap pieces of oak, I predrilled holes then cleco'd the pieces to the
oak. I think began to countersink with the cage on the drill. This allowed for
most of the pieces to be done, however on E-702 the flanges prevent the cage
from being used on the holes closest the flanges. I used my electric screwdriver/deburring
bit and counter sunk those holes by hand, slowly but surely.
I ended up ruining
E-606PP as I used the cage to countersink the holes at the very end of the
piece. Since at the ends there is no material to support the width of the
countersink cage, the bit cut too deep.
Upon inspection of all the other pieces, I noticed that a hole in the flange/tab of the right side E-704 was oblong. I put in an order to Van's for a new 606PP and a new 704 rib.
