An easy fix for drawers that bind

When I built the curvy-front jewelry box from issue 195 (Dec./Jan. 2009/10) as a Christmas gift for my daughter, I used box joints for the drawers rather than rabbets. But six months later the drawers bind and don’t slide as easily. The binding seems to be more side-to-side than up-and-down. Is this a result of using box joints?

Submitted by WOODreader2