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Thread: wattizzit blade

  1. #1
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    Nov 2006
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    wattizzit blade

    I have had this kicking around in the 'stuff' I inherited.
    Haven't a clue what it might be good for. Some kinda blade, no doubt.
    It is 3 1/2" diameter with a 5/8" arbor. Lotsa nasty looking alternating teeth.
    Attached Thumbnails Attached Thumbnails wattizzit blade.jpg  

  2. #2
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    Looks like it might be some kind of non-adjustable dado blade
    Jesus was a Woodworker

  3. #3
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    RETIRED(!) in Austintown, Ohio
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    Frank,
    If I recall correctly, it's one of those 'good ideas that didn't work' Wonder tools that was briefly marketed maybe twenty years ago.

    It was intended for use in a circular saw, for cutting curves.

    A neighbor back then had one - or at least one similar to it - and was going to make a curved front bar for his patio. As I recall, the kerf was about 3/8" wide, and VERY rough. Also, about halfway through, Lou lost control to the saw and it went skittering across the veneer face of the plywood he was cutting. I never saw that blade again...
    Jim D.
    Adapt, Improvise, Overcome!

  4. #4
    Join Date
    Nov 2006
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    Mountain Home, Arkansas
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    Quote Originally Posted by Jim DeLaney View Post
    Frank,
    If I recall correctly, it's one of those 'good ideas that didn't work' Wonder tools that was briefly marketed maybe twenty years ago.

    It was intended for use in a circular saw, for cutting curves.

    A neighbor back then had one - or at least one similar to it - and was going to make a curved front bar for his patio. As I recall, the kerf was about 3/8" wide, and VERY rough. Also, about halfway through, Lou lost control to the saw and it went skittering across the veneer face of the plywood he was cutting. I never saw that blade again...
    This one is 5/16" thick. Sounds like a possibility.

  5. #5
    Join Date
    Jan 2007
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    Honolulu, Hawaii
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    wattizzit blade

    Frank, I would be inclined to agree with Dan, that it is a "fixed width dado".

    I think the fact that it is as thick as it is at the arbor hole, I would doubt that it would fit a circular (Skilsaw) saw.

    JMNSHO

    You have a table saw. Give it a whirl and see how it works for dadoing. It's sharp, no?

    Aloha, Tony
    "You got to learn from the mistakes of others. You won't live long enough to make them all yourself". (Author unknown)

    "Time flies like..... an arrow,,,Fruit flies like..... a banana." Groucho Marx

    Ah,,,to live in Paradise!

    Registered voting member

    Fighting for all I am worth, and praying every day.

  6. #6
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    Dec 2007
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    lutefisk capitol, USA
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    We used blades similar to that in a hand held air driven saw to cut the roots out of aluminum weld joints back when I made things that went boom. One poor fool tried using it in a t-shirt and ended up with a bunch of aluminum shavings seared to his skin. I would hang it on the wall or bury it in the garden myself.

  7. #7
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    Yep, sharp. Probably never used. I suspect it is older than I am.

    Dale, if I plant in garden, will it grow?

  8. #8
    It contains all the componants of a Dado blade: Left side knife cut, Center rakers, right side knife cut... diameter is small due to less needed for shallow depth dados, 5/8" arbor indicates for use on smaller saws, so the smaller diameter would prevent overloading the saw motor with deep cuts, Most likely manufactured for industry use where a fixed size Dado is in constant use for repetive cuts.

    I see no reason to fill your garden with iron deposits as it may be just the ticket when you need a 5/16" dado and a quick set-up. Hang it on the wall and remember it for you next need. Or offer it on E-bay

  9. #9
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    Nov 2006
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    Thanks all. Logical conclusion seems to be it's a dado.
    Will give it a shot.
    Two more 'wattizzit' blade thingys coming up.

  10. #10
    Yesterday I was doing my apprenticeship with a local bloke who specialises in Japanese joinery.

    We're making a tool cabinet as part of a shop clean up process and need to do a rebate on the rear of the carcase for the plywood back. I asked "sensai" if the plan was to use a router when he goes to a cabinet and pulls out a Hitachi circular saw from Japan.

    It's a rebating saw and basically uses a mini dado blade just like the photo shown. Sensai's comments on it was "It's very useful but you absolutely have to run it with a fence or it's a wild animal"
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