Over-under-over/over-over-under(3X wheel lacing)

also, it seems daft, but dont forget to 'ping' your wheels. When you start to get some tension in your spokes, ever revolution of the wheel where you are doing 1/2 or 1/4 turns etc, put the wheel on the floor and lean on it slightly. do it in 3 or 4 different spots on each side. it lets the spokes 'ping' and find their own place as it were.

Yeah, good point.

The spokes turn slightly together with the nipples, becoming twisted. This means they not tensioned as much as the should for the amount of turning you've done with the spoke key. When the wheel is flexed slightly the spokes untwist. Usually screwing themselves into the nipple.

I built some 29er wheels with DT Revolution spokes (uber thin). The thin nature of the spokes, my generosity with the spoke prep on the threads, and lube on the nipple shoulders. Lead to two spokes winding up so much (yes I should have noticed), that when they pinged, it was more of a ping....BANG!

(Found out its good to do little return turns when tensioning very thin spokes. ie. 1/4 turn tension 1/8 turn back. I also replaced all the disc brake side spokes with super-comps for easier tensioning)