Kitchens – How to trim 1/8 off the bottom of an installed cabinet

cabinetskitchens

I tried to replace an over the range microwave today. My kitchen has a cabinet over the microwave and a tile backsplash behind the range. Thus, I have a 16 1/4” vertical space for the new microwave. Unfortunately my new microwave is 16 3/8” tall. The mounting bracket is already installed flush with the top of the tile. The wall is brick, so I really don’t want to have to move the bracket.

Is there a relatively easy way to trim 1/8 inch off of the cabinet? The front face is oak and I’m good with both a plane and a chisel, so that’s easy. It’s the plywood sides and back I’m worried about.

Best Answer

With my interpretation of your circumstances, I feel the tool for this task would be an oscillating multi-tool, found just about everywhere.

multi-tool

The attached blade in the photo may be the one you'd use, although the semi-circular one would give you a smoother entry. They cut relatively slowly allowing for precise control. You'd be able to build a shim under the cabinet to keep the blade in the desired position vertically as you run it over the areas to be cut.

Depending on the clearance you have, you should be able to get all the way to the corners (the blade can be mounted in various angles) or have to take the chisel to break the hold-outs clear.