There are tons of YT videos on wheel building, and plenty of free spoke length calculators on-line. Just take an old scrap wheel, strip it and then rebuild it a few times, you'll soon get the idea.
Thanks and yes, one day will do start on this, need to learn. The issue is with spoke lengths as thyere is not much info on 50s or older hubs & rims unless I'm missing something?
There are tons of YT videos on wheel building, and plenty of free spoke length calculators on-line. Just take an old scrap wheel, strip it and then rebuild it a few times, you'll soon get the idea.