How to use a tennis ball in the box?

Discussion in 'Training Logs' started by ftp1926, Jan 13, 2015.

  1. ftp1926

    ftp1926 New Member Full Member

    Oct 3, 2012
    someone can help me exactly how you make this thing?this video helps somewhat
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    ,but i cant understand if u do hole in the ball and then put rope inside or put glue??