Originally Posted by Jiggle

No, you can only go +4.5mm over the minimum length. Obviously the spoke head needs to meet the nipple head at the top edge of the rim bed to support it. Traditional nipples will have the spoke protrude through the top of the nipple very quickly so your spoke driver will no longer engage. With the double square, you can use the Park SW-16. Engagement is 1/8 of a turn instead of the usual 1/4 of a turn, making wheel building faster.