build question dimpling

[bobnoffs]

hi all,
i have yet to dimple anything but it is on the next build day's list.
i have read that dimpling enlarges the hole a bit and i am wondering if it would be better to dimple first and then final drill. seems like you would have a better chance of your finished hole coming out the size of your finish drill size? manual says to drill first.

bob noffs
n. wi.

 

[aerhed]

The dimple die pilot is too tight if you dimple without drilling. It's the only time I've seen cracks form form in #40 holes. The slight looseness is something you're stuck with. It works.

 

[DaveLS]

The vast majority of holes in the RV-12 are already final size. This is one of tha major differences that the 12 kit has with the other kits from Vans.

-Dave