CNC: Leveling an End Grain Cutting Board

Duration: 4:29

People love end grain cutting boards. They’re exceptionally beautiful, and because they’re end grain not long grain, they’re durable and long-lasting. The same features that make an end grain cutting board durable also make them difficult to level after the final glue up. A planer might seem like a good solution for this problem, but you shouldn’t run end grain cutting boards through a planer. A CNC router provides a great solution for this problem.

Set up the cut

Using CAD/CAM software like VCarve Pro, create a Pocket Toolpath. Use a light depth of cut, 1/16” works well. In the software, create a rectangle that’s slightly larger than your cutting board. Be sure to ramp the toolpath, 4” works great, so the bit eases into the work.

Secure the board

The entire cutting board surface will be milled, so you can’t use hold down clamps directly on the board. Instead use hold down clamps to secure scrap to your spoilboard, then slide wedges between the scrap and the cutting board to lock it in place. Make sure this arrangement is below the surface of the cutting board so it doesn’t interfere with leveling.

The bit

Any flat-bottomed router bit can be used for this but, like fly cutting your spoilboard, it’ll go faster with a large diameter bit like the cutter used in the video.

Multiple passes

Run the toolpath and see what you get. If, after running the toolpath once, the surface is still irregular, simply rezero the Z axis (don’t change the X and Y origin) and run the toolpath again. Rinse and repeat until the surface is cleaned up. Flip the board over, rezero the Z and do the same thing to the other side.

Discussion
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2 Responses to “CNC: Leveling an End Grain Cutting Board”
  1. Gordon Cain
    Gordon Cain

    Noticing the tear out at the end why wouldn’t there be a sacrificial strip placed against the sides?

    Reply
    • Customer Service
      Customer Service

      Hello Gordon,

      Here’s what the experts had to say about your question:

      It’s easy enough to sand it out on this project, but if you want to use a sacrificial board that would help eliminate it as well.

      Sincerely,
      Paul
      Wood Workers Guild of America Expert

      Reply