A dado set changed how I build shelves and cases. Flat-bottomed grooves in a single pass – faster and more accurate than routing.
What’s a Dado Set
It’s a stack of blades that mount on your table saw arbor. Two outer blades plus chippers in between. You configure the stack width to match your desired groove.
Standard sets cut 1/4″ to 13/16″ wide. That covers most plywood and solid wood applications.
Stacked vs Wobble
Stacked dado sets (multiple blades) cut flat-bottomed grooves. Wobble dados (single blade that tilts) cut slightly curved bottoms. For joinery, stacked is better. Wobble dados are cheaper but less precise.
Common Uses
Dado: A groove across the grain. Holds shelves in bookcase sides.
Groove: A channel with the grain. Cabinet backs fit into grooves.
Rabbet: A step on the edge. Box joints, drawer construction.
One tool, multiple joints. That’s why it’s valuable.
Setup
Make sure your saw can accept a dado set – not all can, and European saws usually can’t due to blade guard requirements. Check arbor length.
Set the width slightly undersized, then add paper shims until the fit is perfect. Test cuts on scrap before committing to your workpiece.
Safety
Dado sets remove a lot of material quickly. Use featherboards and push sticks. Never reach over the blade. Keep the throat plate close-fitting to prevent pieces from falling in.
Quality Matters
Freud and DeWalt make reliable sets. Cheap dado stacks chatter and leave rough grooves. This is a tool worth spending money on if you do casework regularly.
