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Kerf Offset tool. My Take on a great idea

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  • Kerf Offset tool. My Take on a great idea

    I saw the video for the new Bridge City KM-1 KerfMaker offset tool.

    http://www.youtube.com/watch?v=PQ6_S6lZKLI

    That's a great idea; being able to move a fence a specific distance less the kerf of the blade. This could save a lot of trial and error setup time! It's hard to recover from a sloppy over sized dado/groove.
    My first attempt had a thumb screw on the top that got in the way. This afternoon I made the MK II version with a knurled knob recessed in the top. Machine screws and threaded brass dowels (no wood screws). The roasted maple I used is to soft and tends to come apart easily. The next may be rosewood! This will work with kerfs up to 1/2" wide (dado stacks) and dado/grooves up to 2" wide.
    Attached Files
    Chris Gorman in Ottawa

  • #2

    Re: Kerf Offset tool. My Take on a great idea

    Re: Kerf Offset tool. My Take on a great idea

    Chris,

    Make a rosewood one! Nice brass work cries for rosewood! Good job.

    Ken

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    • #3

      Re: Kerf Offset tool. My Take on a great idea

      Re: Kerf Offset tool. My Take on a great idea

      I see where that will be a very useful jig and save lots of time.
      Gordo

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      • #4

        Re: Kerf Offset tool. My Take on a great idea

        Re: Kerf Offset tool. My Take on a great idea

        I've been thinking of making something similar for a while. Where did you source the knurled knobs from? I was looking for them for some other jigs a while back but couldn't find big ones anywhere.

        Thanks,
        Charlton

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        • #5

          Re: Kerf Offset tool. My Take on a great idea

          Rosewood varient #3

          Here is the third version in rosewood and brass. The rosewood has an amazing luster and surface finish after running it through the Beall buffing system. The brass hardware is turned and knurled on my 1942 Logan lathe. I use a Freud metal saw blade to cut the small brass plate (works great). Machine screws and threaded rod used throughout.
          Attached Files
          Chris Gorman in Ottawa

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          • #6

            Re: Kerf Offset tool. My Take on a great idea

            Re: Rosewood varient #3

            Darn. One of these days, I have to get a lathe so I can turn some stuff.

            How do you "lock" the brass rod that measures the kerf offset? Is it locked with a screw at the top?

            Nice job.

            Comment


            • #7

              Re: Kerf Offset tool. My Take on a great idea

              Re: Kerf Offset tool. My Take on a great idea

              Beautiful work Chris. There was a lengthy thread on the Oz forums with fellas waiting on delivery of the Bridge City version. Some were waiting several months.
              www.sppss.com
              "God wants spiritual fruit, not religious nuts!" Sign outside our Pentecostal church.
              sigpic

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              • #8

                Re: Kerf Offset tool. My Take on a great idea

                Better photo descriptor Kerf Offset tool in use

                Hope the photos clears up how to use this kerf offset tool. This simple device removes all of the trial and error process from fitting dados joints! Best of all, itís no problem if each dado is a different size. Just mic the piece to be fitted in the gauge and adjust the top slider (the kerf setting doesn't change). Perfectly sized dados with no tweaking or laminating veneer strip recoveries!
                Think I'll put one of the sapele/brass ones on eBay for fun.
                Attached Files
                Chris Gorman in Ottawa

                Comment


                • #9

                  Re: Kerf Offset tool. My Take on a great idea

                  Re: Kerf Offset tool. My Take on a great idea

                  Chris,

                  Great work, much nicer looking than the BC version!

                  Matt
                  Last edited by matt in golden; 11-23-2009, 01:37 AM. Reason: Redundant link...
                  SPCHT

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                  • #10

                    Re: Kerf Offset tool. My Take on a great idea

                    Re: Kerf Offset tool. My Take on a great idea


                    Beautifully done.

                    You have made this with great thought, care & precision.

                    I would love to make one for my self.
                    Do you have plans or any further info on how you made this tool that you could post or send by e-mail?

                    Dan from Nanaimo, BC

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