Originally Posted by
Rocket-Sauce
Getting the right length spokes is also the "hardest" part. (I put that in quotes because it really isn't that hard...). Building wheels is a great excuse to get nice tools...
Spoke lengths are easy to figure out if you have the right hub and rim specs. However, if you buy all your wheelparts from one vendor, ask them to also calculate the spoke lengths...if it turns out to be wrong, its clearly their fault, not yours.