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How to break in a softball bat
Make sure your bat needs to be broken in.
Fast pitch softball bats that are 100 percent alloy, or that have an alloy barrel, are good to go right away, with no break-in period needed. Composite bats, however, have carbon fibers that need to be loosened before the bat reaches optimum performance.
The fibers can be loosened during just one break-in session that will take about an hour. Many fast pitch players hesitate to use a new composite bat in the middle of season, thinking that the break-in process is too time consuming.