Originally Posted by wrench

Don't do it! I've seen an accident on the velodrome caused by a flange cracking on a radially built front wheel. Cracked pelvis, much dental work, collarbone tendons snapped, wrist broken, knee wrecked. Radial may be pretty but the risk isn't worth it. I build wheels professionally and would only now consider radial on rear non-drive side if client insists and the hub is trustworthy. Never use old spokes. They have been loaded and unloaded thousands of times in their lives and if they are not built tight enough will eventually fail, especially if they are not a tight fit in the flange hole.