Also if the rim is directional drilled and its1:1 lacing you cant lace the rim the wrong way round. Which ever way you start with the valve hole correctly boxed will be the right way or I have been very lucky over the last few years.
When I first started building wheels this did confuse me till I tried lacing the wheel the other way and found it was always right.
With 2:1 lacing there is right and wrong way to lace the rim.
luft
Also if the rim is directional drilled and its1:1 lacing you cant lace the rim the wrong way round. Which ever way you start with the valve hole correctly boxed will be the right way or I have been very lucky over the last few years.
When I first started building wheels this did confuse me till I tried lacing the wheel the other way and found it was always right.
With 2:1 lacing there is right and wrong way to lace the rim.