Finger Holes

[bowl1820]

The first one, offest thumb drilling, is basically a visual illusion.

Here's example (thanks to striketheory).
"This is the same ball. You will notice in one pic, the thumb appears to be offset. It only appears that way from the optical illusion created when you line up the fingers to a basic T shape."


The bottom picture shows how the ball was actually drilled, and the appearance of the offset is from the variance in span.


From Mo:

You are drilling into a sphere. Offsetting the thumb only changes the lateral pitches of the fingers. That's math. It's spherical geometry.

[Tampabaybob]

OK, I stand corrected. In the early sixties, when I was a kid working in a pro shop, the guy I was working for had drilled a couple of these and drilled them with a semi span for the ring finger. So, based on that experience, I have always been under the belief that, that was the correct drilling. Again, after doing some googling, I stand corrected.

As far as the question in regards to the ring finger being longer than the middle finger, I only suggested that, "it could be" that the ball was drilled for a lefty. (a presumption without seeing the ball). I do not drill balls for a living so I will defer to someone that does.

Bob

[serial bowl]

I just had a ball drilled incorrectly, it did not feel right and I knew something was wrong. I wonder how many people actually get their equipment drilled wrong, and don't even realize it.
Since it may be their first ball, and that's all they have ever used, (except a house ball), they think it's right, because it was done by a "pro" shop.
Maybe the person who used that ball is missing a finger.