Take 100 swings from a tee. To make the process go faster, have someone help you by setting up new balls on the tee before every swing. You can take more than 100 swings if you desire. However, don't do less than 100, since the bat needs to be broken in gradually. read more
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. read more