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KM-1 Kerfmaker

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KM-1 Kerfmaker

Item Number: 1101-205

Availability: Available for Pre-Order Learn more »

Quick Overview

Anybody who has been working wood for any length of time understands the pain of sizing grooves with today’s off-size sheet goods. If you have ever tried to “dial in” a dado head with paper shims, or fussed with a wobble head dado set you know this hassle intimately.


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First Payment: $7.30

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Founder's Circle Price: $65.70
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Product Description

The KM-1 KerfMaker is an ingenious little tool that makes sizing grooves and dado cuts painlessly easy. It is unbelievably fast and accurate. (The video below shows the tool in action) We can’t imagine how you can get anything other than dead perfect results. Precision milled from aluminum, this tool is sure to be one of your most cherished shop aids.

Whether you own a table saw, chop saw, radial arm saw, the Jointmaker Pro, router table or any other tool that makes a clean kerf, you can use the KM-1 to expand that kerf to suit your needs. It is an amazing little tool that has earned our coveted “Bacon Saver” status. This means you will get gallery quality results every time you use the KM-1 Kerf Maker. The KM-1 is perfect for; Frame work, box makers, shoji screens, torsion boxes, carcase work, drawer making and the list goes on. It is a tool that once used, you will never want to lose.

The concept is simple-the KM-1 is first “calibrated” to the particular cutting tool’s exact kerf. (See video demonstration). This is a one-time step. You then simply gauge the thickness of your stock with the KM-1, lock and you now can use the KM-1 as a flip stop to create a groove the exact width of your stock! It is fast, and potently accurate. One KM-1 will work for every tool you own. (If your router table fence floats, you will need two KM-1’s to accurately size grooves). The KM-1 is so handy you may want to consider a dedicated unit for each of your cutting tools.

Please visit our Kerfmaker forum to learn more about this amazing tool!
Machined anodized aluminum

Customer Reviews

5 Item(s) Show per page
  1. A tiny gem Review by Steven

    A small tool yet it packs a powerful punch especially when you're trying to set up your tools for flawless, gap-free joints. There's a terrific video by HalfInchShy outlining it's many uses on YouTube, check it out: (Posted on 1/3/14)


    Incredible tool; I got a perfect kerf on my first try. Recommend all woodworkers get one. Sure you might get along without it---there *are* ways to do the same thing for zero cost. However, this is just so much faster and it's such a cool tool. Live a little---just get one. (Posted on 12/5/11)

  3. Exceptional product Review by William

    KM-1 Kerfmaker works as advertised! (Posted on 11/3/11)

  4. This thing id NEAT! Review by Chucko

    I had some reservations about spending so much money for this tool but it turns out to work exactly as advertised first try! I used the no measure calibration technique illustrated on the product information video and ended up shimming the measurement by one paper thickeness. I have used it to make a jig for routing small mortises and found it to be incredibly accurate. This device is worth the money spent as it cuts down certian cerf measurement and cuts to seconds. I am looking forward to finding how many different ways I can put this device to work. (Posted on 11/2/11)

  5. Awesome Review by Dee Bee

    I live in Australia - I am really impressed with Bridge City Tool Works. I have just bought tools of them and I will be 'back for one of these VERY soon. It seems to make woodworking so easy!!! (Posted on 5/23/11)

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