I'm sure this has been asked in the past, but I can't find a definitive answer anywhere. The RV-8 left elevator instructions say to countersink many holes on the various spars made from .032. Section 5.5 COUNTERSINKING AND DIMPLING states that for AD3 rivets, .032 thickness or less must be dimpled and .032-.040 should be dimpled but can be countersinked if necessary.
I am leaning toward dimpling since it does not require the removal of material. It is also easier and less likely to ruin a part. Any thoughts would be appreciated.
I am leaning toward dimpling since it does not require the removal of material. It is also easier and less likely to ruin a part. Any thoughts would be appreciated.