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Author Topic: Broken slug  (Read 1107 times)

SrKegler

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Broken slug
« on: February 08, 2004, 05:56:38 PM »
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
Have Balls - Will Travel


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JohnP

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Re: Broken slug
« Reply #1 on: February 09, 2004, 10:25:22 AM »
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