jlfernan
Well Known Member
I've had this happen a couple of times a now I'd just thought I'd ask. Sometimes while dimpling a hole near a bend in a part such as where the F-787 stiffner web attaches to the F-706 bulkhead, which worked on today, I made tiny gouges into the metal. Maybe 1/16" long but not very deep. The edge of the female dimple die contacted the material. On side of the die is ground flat to give me extra room, but it must have turned just before I squeezed the dimple. A few passes withe Scotch-Brite pad and some primer and they are all but invisible. My question is, is this a problem or am I just paranoid? I know that on the rudder spar you are warned about this, but I assume it's because of the twisting loads the spar may experience. Any comments?