Layout Tools: KM-1/KM-2 Kerfmakers

Created by Sam V, Modified on Thu, 11 Apr at 9:41 AM by Gabriel Izzo

Information for the following model:

  • KM-1 Kerfmaker
  • KM-2 Kerfmaker


Product Page:


Instruction Manual:



KM-1 Kerfmaker Video:



KM-2 Kerfmaker Video:



To ensure the tool is set up correctly, check the following:

  • When measuring out the kerf of your dado, make sure to set that correctly to ensure accuracy. If the kerf amount is inaccurate, then there will always be a slight discrepancy.
  • When measuring out the workpiece, make sure you measure the thickness of the "mating piece". For example, if cutting a half-lap joint:
    • Measure the width of Workpiece B to cut the half lap on Workpiece A. 
    • Measure the width of Workpiece A to cut the half lap on Workpiece B
  • The Kerfmaker will make pretty tight tolerance joints (press fit), so if you want to make a "slip fit" tolerance for the joints, then shim a piece of paper when taking the measurement of a workpiece. Vice versa, depending on how tightly you secure the Kerfmaker when measuring the workpiece will affect the tolerance levels.


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