Ask WWGOA: Wobble Dado Setup

Question:

I have a wobble dado. When I put all four hub pieces on the blade, the blade does not fix on the axle of my table saw. I can’t find any instructions on how to assemble the hub to make it fit. The package did not show any instructions–just what it will do. I know a wobble is not the best method, but it is all I can afford right now. Can you give me any help with this?

Submitted by pegw

Answer:

It could be your saw. Some saws, primarily benchtop (portable) table saws aren’t designed to accept a dado head. If that’s the case, the arbor of the saw won’t be long enough to accommodate a dado. Even on a stackable head, the maximum width of the build up is typically 13/16″. If your blade is that wide, or less, it will fit on saws designed to accept dado heads.

George

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Discussion
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14 Responses to “Ask WWGOA: Wobble Dado Setup”
  1. Jerry
    Jerry

    I set up wobble blade get the cut right but after I run three or four pieces the cut moves?

    Reply
    • Customer Service
      Customer Service

      Hi Jerry. It sounds like the locking mechanism on your wobble dado isn’t working properly. Perhaps it is worn, or maybe was never adequate. I favor a stacked dado such as this one: http://amzn.to/2DlEaig . Stacked sets cost more but maintain better accuracy and generally provide better cut quality.
      Thanks
      Paul-Woodworkers Guild of America

      Reply
      • George Constantine
        George Constantine

        I had the same problem on my “wobble”. It got jammed on the arbor and had to ruin it in order to remove it. I made a jig that fit exactly the OD of my router base. This allowed me to use a router bit 1/32 less than a nominal shelf thickness to router out dadoes for shelving in bookcase assemblies.

        Reply
  2. Steve
    Steve

    The other drawback to a wobble dado is that the bottom of the cut is not square to the sides – it is slightly curved. This is more pronounced the wider the dado cut. I would think that a router would do a much better job than a wobble dado.

    Reply
  3. CHARLES
    CHARLES

    Seems very true of my Milwaukee Battery powered Portable Table saw! Which otherwise is the best thing since canned beer!

    Reply
  4. Michael Dilling
    Michael Dilling

    I have an older 10″ Craftsman table saw that I inherited. It seems the blade trunion is slightly out of parallel with the grooves for the compound rest and therefore everything else on the saw. I have tried loosening the 4 bolts that hold the trunion to the table but the accuracy is very difficult. Do you have any tricks that you have learned over your many years of experience that would help me get this thing dead true? Thanks for any insight.

    Reply
    • Customer Service
      Customer Service

      Michael,

      The approach that I use is to loosen three bolts and hand tighten the fourth bolt. With it hand tightened you can then move it in very small increments by lightly tapping and that should allow you to dial in the accuracy. If you try to adjust with all four bolts completely loosened it is very difficult if not impossible to make the minor adjustments that are needed.

      -Paul
      Woodworkers Guild of America

      Reply
  5. durango
    durango

    Can I use a dial in dado blade on my Hitachi table saw I have had it more years than care say Thank you Carl

    Reply
    • Customer Service
      Customer Service

      Carl,

      Unless there is something wrong with it, I don’t see why you couldn’t use it.

      -Paul
      Woodworkers Guild of America

      Reply
  6. Carey mitchell
    Carey mitchell

    If the issue is indeed a short shaft, do not, under any circumstances, use the dado head unless the nut goes fully onto the shaft. The thought of a flying dado head is not pretty.

    Reply
  7. Jack Schrader
    Jack Schrader

    I’m looking for a site that shows all the different woodworking methods/skills for building projects. Does this site give pictorials/ ideas for childrens’ and adult projects? Thanks. Regards, Jack Schrader.

    Reply
  8. Doug
    Doug

    Are there removable flanges (washers) for which you can substitute the wobble washers?

    Reply
    • Customer Service
      Customer Service

      I’m not aware of anything like this.

      Paul
      Woodworkers Guild of America

      Reply