Two dado blade types dominate the industry. Wobble dado blades are simple one-piece blades where you adjust the width by making it wobble more or less — unfortunately this leaves the bottom of the dado slightly concave. Stacked dado blades include blades, chippers, and shims which you add or subtract to get the correct width. These type leave a flatter bottom, but are usually more expensive and can be difficult to adjust.
Freud tries to combine the advantages of both types of dado blades with its Dial-A-Width sets. The sets are in essence a stacked dado blade without the shims. Instead Freud uses a patented dial hub that adjusts the blade width by .004″ with every click.
Continue reading »