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Imran Sayyed
03-11-2017, 09:35 AM
Hello everyone,
My question is how to check a ball if it is good to play. By this i dont mean if the company of the ball is good or bad . I want to know how to check if a ball is completely round. I can spin the ball on my nails as well if that could help.how to know if the ball has any dents on it. Thank you .

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Tony's Table Tennis
03-11-2017, 12:06 PM
see if it spins evening
or spin it on a table and see the vibration
or play with it and feel it

Archosaurus
03-11-2017, 05:20 PM
Put it onto a table or something else flat, grab it with your fingers and put a side/top spin on it. Sometimes you notice something weird.

Tinykin
03-11-2017, 06:37 PM
Wonder if this would work for a TT ball

https://www.youtube.com/watch?v=bbyb0DL22NE

Or maybe you need to make a roundness gauge like this:

https://www.youtube.com/watch?v=W1XYxzv3JlU

ttmonster
03-13-2017, 09:14 PM
I would spin it on the table to check if its wobbling .. however if there is a hidden crack or if one side of the ball has become soft , I normally press it on the table with the paddle with a little pressure , of course not with such pressure that a good ball will break under it, and rotate it , if it has a hidden crack the ball collapses

Der_Echte
03-14-2017, 12:02 AM
Put ball on flat surface, open palm and press down with 100kg down force on ball, cracks will become quicklt evident.

Usually you hear those on the boune, realize warped balls by bounce and spin on table test.