http://www.woodworkingtips.com/etips/etip022500wb.html

is the safe and easy way to make a "small" cut. You
could use a router or circular saw depending on what
you have.

John wrote:

I've got to trim a quarter inch off of the top of a pine cabinet to make
room for a new refrigirator. The cabinet sits above the refrigorator. I've
got the cabinet section off, and before I have at it with my circular saw, I
thought I'd like to hear suggestions on how to make the cleanest cut.