If you’re referring to the bur that’s left along the cut you might consider changing to a finer saw blade size as that can make a difference. The suggestions you’ve received above for clean-up are great. If there’s a lot of piercing I sometimes use a sanding strip that I can thread inside of smaller areas which works really well. There’s a previous thread that touches upon how others approach clean-up.
Gerald is correct in that this is one of those boring tasks that needs to be done. Unfortunately it’s also one of those tasks that can make or break the presentation of your finish piece.
Pam