Dang, don't be telling everyone how easy it actually is...that'll shatter the whole wheelbuilding is a black art myth...lol. Take it out for a ride and listen for pings and zings - if you don't hear any then you stress-relieved it properly.
My own tip for wheelbuilding is during the final tensioning stage turn the nipple just a bit past where you want it to be, then turn it back...seems to result in less spoke wind-up at least for me. Brass nipples rock for easy truing/tensioning, too...I'll never again use aluminun
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Rock Lobster