It depends on bridge length, "wing span", forearm length and chord length (arc width).
The tip's variance in my example is a
maximum of 0.8 mm (+/- less than 1/2 mm).
You disrupt threads by being so defensive and argumentative that you create arguments with yourself, like you did in this case. I didn't say the tip traveled in a straight line (what you argued against) - I said its height variance is miniscule and you exaggerate it.
For those interested in the geometry, here's a drawing to illustrate:
Rather than confuse things even more with the formula for calculating the height of an arc (from its radius and width), here's an online calculator that does that for you:
Calculating the Sagitta of an Arc
pj
chgo