Some of the nicer pullers come with a insert to put into the crank so this doesn't happened.


Yeah mine is a cheap one, but it had a button that goes on the end.
It was lost in the crank cuz I removed the washer, then didn't replace the bolt. Ruined the crank but I still use the puller just need to remember to replace the nut after removing the big washer. We live we learn.