I also posted this as a response on the Ask the Woodworking Experts forum. It is under a recent topic called TS3650 Problems!.
I have had my TS3650 for about 5 weeks now, and love it - except for one thing: DADO problem.
I agree 100% with Strong330 about the arbor problem. There is definitely a "recess" in the 5/8" arbor on mine too, about 1/8" out from the arbor flange. This recess is about 1/8" wide. The threaded portion of the arbor is a true 5/8" diameter, as is the 1/8" shoulder next to the arbor flange. This design has no effect on a single 10" saw blade, which sits on that 1/8" shoulder, but it sure affects the use of a stacked dado set. Any blade or chipper that lies over the recessed area will not line up true with the rest of the dado blades.
This amazed me, so I also called RIDGID support. They were immediately familiar with the problem, and said that the design was "inherited from Emerson", but that there was no plan in the works to change it. RIDGID suggests the use of a wobble dado set, or an adjustable set, like Freud makes. But a stackable dado set will not work right. To compound the issue, several on this forum have advised against the use of wobble dado sets.
To me, this is a major problem, as building bookshelves was a major reason that I purchased the saw. I had planned to make 3/4" dados on my saw. I realize I can make these with my router, but COME ON RIDGID! This is a major problem and oversight, and should be fixed.
I'm surprised by the number of people that say they have had no problems in using a stacked dado set. I even read a thread that indicated this design problem even existed on the TS2412. RIDGID must be changing designs back and forth.
I am open to any suggestions or information from anyone who knows about this issue. Bob Dueker, if you are out there, HELP!
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