I found a heavy shelf made of some sort of particle board. The shelves are fixed in place, and I would like to make them adjustable. I’m interested in cutting grooves into the interior of each side to fit shelf standards so they are flush with the surface.
What would be the best tool for the job? Dado blade on a table saw? A router? Something else? And any tips on how to avoid chipping the surface/edges next to the cuts or the ends of the boards?