Missed countersink - Now what?

[Aero_Octaveus]

So, in a brilliant move seems I missed a countersink on the main spar for the leading edge skin dimple. Last one in the row at the end. Of course I have it all nearly riveted.

So...any suggestions on how I might solve this. I was thinking of flattening the dimple on the leading edge skin, then countersinking the skin for that one in particular. Question is:

1. Do I countersink for a standard AD3 rivet. (the leading edge skin is 0.025")

2. Countersink slightly for NAS1097AD3 rivet and live with a smaller head?,

3. Drill to #30, countersink slightly and use a NAS1097AD4 rivet? (I'm nervous about drilling up a size on the wing spar)

Any other suggestions?

[aerhed]

Put your countersink bit on a right angle drill adapte or small right angle drill. Remove just enough rivets to slide the right angle in there and carefully countersink freehand.

[wirejock]

Ask Vans to be certain before drilling anything oversize.
I would drill out enough rivets to free the skin enough to get a countersink cutter in on a right angle adapter. Work it by hand to be sure it doesn't go too deep.Just my $.02 opinion.

[Aero_Octaveus]

Ever been working away all day and by the end you just can't see the forest for the trees! I don't know why my head was locked into one solution. I drilled out a few rivets and sure enough I have access to countersink as you suggested. Ahhh my brain hurts.

Thanks guys for the push in the right direction

[tgmillso]

Nothing like a dramatic story with a happy ending.
Who needs Hollywood when you've got Vansairforce.
Nice work guys. Leaving a countersink out has always been a fear of mine, so it's good to know this potential fix.
Tom.