BallReviews
General Category => Drilling & Layouts => Topic started by: SrKegler on February 08, 2004, 05:56:38 PM
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This one is wierd. I've been using thumb slugs in all my equipment for years. Bowled a tournament this weekend and kept dropping the ball. After putting 6 pieces of white tape in (normally NEVER have to use more than 1), I finally noticed my slug was cracked the entire length of the back side. When I put my thumb in, the carack would expand to about 1/16th of an inch.
First thoughts was that my driller had too small a hole and the pressure caused the slug to crack. BUT, that would have tended to push the edges together.
Only thing I can think is maybe the pilot hole was too big but then I can't see any reason for the slug to crack.
Haven't had a chance to get the ball back in the shop yet.
At least now I fully appreciate the importance of a good fitting thumb!
Anyone else ever had a problem like this. First time anything like this has ever happened, just curious as to the reason.
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~~~SrK - Have balls, will travel
Old bowlers never die, we just don't score as often
Edited on 2/9/2004 9:54 AM
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SrKegler -- This is just a guess. The slug has a small groove on the outside to allow the air to escape when it is inserted. If your hole size leaves only a thin layer of slug, the groove may have created a weak area causing the crack. Let us know what your driller says. -- JohnP