I saw this term on a FB page and was wondering what exactly it is?  Anyone drill their balls this way or have experience with it?  Wanted insight before I decided to spend the $12.95 that he is asking.  Thanks!!

Joe, on Step # 2 it says .... place the Pro Sect at the center of the bridge on the
layout center line that you drew in step one. I understand that part, however ....

The picture shows the base of the  Pro Sect on the center of bridge, and it also shows the base of the Pro Sect above the  edge of the lines where the finger holes will be drilled. What is this distance above these lines is the base of the  Pro Sect supposed to be placed  in marking the degree of angle for the drilling of the finger pitches?

I am hoping to to drill my ball with the ADT drilling Monday evening and need this information prior to drilling it. I sent you an Email with this same question in hope that you will see it either there or here and reply before Monday evening.

center of the bridge is it's narrowest part, not where the bridge cut lines intersect the cut lines of the fingers.

Quote from: Brickguy221 on March 15, 2015, 12:20:50 AM

Joe, on Step # 2 it says .... place the Pro Sect at the center of the bridge on the
layout center line that you drew in step one. I understand that part, however ....

The picture shows the base of the  Pro Sect on the center of bridge, and it also shows the base of the Pro Sect above the  edge of the lines where the finger holes will be drilled. What is this distance above these lines is the base of the  Pro Sect supposed to be placed  in marking the degree of angle for the drilling of the finger pitches?

I am hoping to to drill my ball with the ADT drilling Monday evening and need this information prior to drilling it. I sent you an Email with this same question in hope that you will see it either there or here and reply before Monday evening.

Brick,

If you get the reply by email, could you post it here?   I was wondering about the same thing myself.

Thanks.

M1 2 AZ, here is what I received from Joe ... Measure that angle by placing the pro sect at the half-way point on the
bridge (on the layout center line and 1/2 way between the fingers).  Does
that help?
 

I am still not 100% clear here, but think it may mean ... if you draw around the finger grips for finger holes like he shows in one picture, then place the Pro Sect in center of bridge and the center between the image of the holes you draw on the ball which would be the narrowest point up the bridge.

That may be what itsallaboutme is refering to where he said ... center of the bridge is it's narrowest part, not where the bridge cut lines intersect the cut lines of the fingers. 

Joe is going to make a video of actually measuring a person's hand today around 2000 over in Germany.

"cruising around" working in Germany

Draw an imaginary line from left to right through the fingers.  This would be the center of the bridge on the layout center line as well as the point 1/2 the distance of the finger height.

For people that use grips, the drilled finger hole for most is 31/32. Half of that would be 1/2" on the small side, so if I measure up that amount from the finger cut line, that should give me half way up. I think that I am ready to drill now. Hope my driller has my ball plugged and ready tomorrow (Mon) evening.

My thumb to finger angle is 30*. Natural line of thumb is 1/16 if I did that part right, so I will drill 9/16 or 5/8 out pitch on thumb. Thumb reverse pitch is currently 3/16 and lateral is 1/16 out. My span is 4 1/4 x 4 3/8. I am going to leave thumb reverse pitch at 3/16 to start. I am going to change span back to my old span of 4 1/4 x 4 1/4 when I bowled much better than currently as my RF span has been too long on the 4 3/8 and finger nail hits the abck of thumb hole and not enough ball on the pad of my RF.

If anyone sees any errors here, correct me please......

The span is cut to cut or center to center ?

Brickguy and itsallaboutme, thanks for the info.

I'm finding out that the more left I go in the thumb, the more my thumb hangs on the ball. I don't have any reverse in my thumb and I'm not sure I want any. I like being at 0" or 1/8"forward in the thumb for a real relaxed grip. I'm plugging the ball again to try less left pitch.I've tried 6/16" left and 7/16" and 5/16".I'm currently going to try 3/16" left with 1/8" away in my fingers.I'll post the results later in the week