Sorry Geof, but I do not think setscrews will contribute anything but faster, cheaper manufacturing! The setscrews will never stay put, as a point on the end will be nothing more than an angle for the weight of balls to slide down and fall off spreading the fork. The loss in precision from locating on a screw thread is also a big issue. I have no problem drilling and reaming a .2505" dia. hole through the balls, as I have a solid carbide drill bit and reamer! The dowel pins are .2502" dia. which gives me .0003" clearance. After the balls are drilled, I will put a full radius on the dowel pins, and make the hole in the fork .0002" smaller so the pins can press into the fork! This ensures the maximum precision & strength for securing the 2.7 lbs balls!
Eric
www.widgitmaster.com
It's not what you take away, it's what you are left with that counts!