1. Grab an alloy hub with standard 3.2mm flanges.
2. Grab a 14g spoke with a 7.0mm elbow. (Use calipers to enclose the spoke from the outside of the shank to the outermost face of the mushroom.)

- Some people will measure elbows differently such as inside of shank to face of mushroom...

3. Stick that in the hub and note the unsupported portion of the elbow that sticks out before the spoke transitions to a rim...
4. Do the same with a 6.2 or 6.3mm.
5. Grab an old DT with a 6.1mm elbow.

Then visualize what happens when torque is applied - and released - during the cyclic use of the wheel. What will happen irregardless of tension to the portion of spoke elbow that exists the flange BEFORE transitioning to the rim?

Also note how the 7.0mm elbows and heads rests in the flange holes in abuilt wheel. What stands out?

Assuming you are a retailer - you can get 14g stainless uncut for .18 apiece /w nipple and .23 apiece cut to length - right here in San Jose, CA.

..33 apiece if not.

=8-)