Most consumers can get away with using a 6″ or 8″ dado blade because they hardly ever need to make dadoes or grooves deeper than 1″. Still, last month Freud introduced their 10″ and 12″ dado sets. Imagine a giant 12″ dado stack — you’d be able to cut a 5″ deep dado!
Besides having more teeth and using 1″ arbors, the 10″ and 12″ dado sets share the same characteristics of the 6″ and 8″ dado sets in Freud’s SD500 line. The blades have negative hook angles and the chippers have four wings instead of two — Freud claims both features make for cleaner cuts. They coat the blades with their Silver I.C.E. coating which reduces pitch buildup and corrosion and they manufacture the teeth out of their TiCo high-density carbide.
The sets include 3/32″ chippers to handle undersized plywood and shims to precisely dial in the width of the cut. The 6″ and 8″ Super Dado sets are currently available starting at $180 and $200, respectively. The 10″ and 12″ stacks aren’t available online yet and Freud doesn’t share any pricing data on its website.
Offhand, the only use I can think of for giant dado stacks is cutting giant tenons, but evidently I’m wrong because the first thing Freud says in their press release is these blades will produce clean and chip free cuts in “delicate” materials like veneer plywood, unlike other larger dado sets on the market now.
If anybody can figure out why you need such a large blade to make dadoes in plywood, can you let us know in the comments?