Wheelbuilding / Wheel Building / Wheel build help

Tangent: I'm going to be lacing some on one hubs (36f/32r) 3x to mavic open sports. Need 289.8mm spokes for the front, and 292.9mm spokes for the rear. So the closest I'll get is 290mm front, and 292mm rear right?

Is it better to go too long or too short on spokes in general?

Some companies do only odd, some only even, some both. So you could get 290 and 293. But basically round down (or up, but I prefer down) to within 2mm.

Front 288, 289, 290, or 291
Rear 291, 292, 293,or 294

So personnaly I'd buy a box of 291s. it'll make building easier.

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