Cutting via Mirror Cut Method

The mirror edge cutting technique is only applicable on edges that will be seamed together. For cuts on edges that sit against a wall or appliance, view our article "Cutting Solid Surface"

Tools Required –

Router

Router

Straight Edge

Straight Edge

Clamps

Clamps

Recommended Bits/Blades

Router: 1/2" shank double fluted router bit

Work on a surface (saw horse, workbench or otherwise) that is level. Ensure your cut depth extends ¼” below the solid surface sheet to guarantee a clean and consistent cut. 

Cutting Solid Surface via Mirror Cut Method

    1. Clamp the two pieces to be seamed on sawhorses (or other work surface alternative) 3/8" apart from each other. It is critical that the two pieces are level and that the gap between them is a consistent 3/8". This 3/8" gap is effectively your cut line. The goal is to run your 1/2" router bit directly through this gap which will remove 1/16" of material from both sides.
      Measure 3/8 inch Apart

      Locate material 3/8" apart

      Confirm Consistant Gap

      Check for a consistent gap

    2. On your router, measure the base to determine the required straight edge offset that centers your 1/2" bit in your 3/8" gap. Once the straight edge is clamped in place, you should be able to set your router on top of the material pressed against your straight edge and you should see the router bit sitting in the center of the gap hitting both pieces of material.
      Measure Router Base

      Measure Router Base

      Mark Required Straight Edge Offset

      Mark Required Offset

      Clamp Straight Edge in Place

      Clamp Straight Edge

      Check Router Alignment

      Check Router Alignment

      Selecting your straight edge: Make sure your straight edge is at least as long as the cut you are going to make. Your straight edge needs to be thick enough that you can run your router base against it without slipping onto it. It also needs to be perfectly straight. Your cut will only be as accurate as your straight edge!
    3. Make your cut slowly using your router, taking great care to hold your router tight to your straight edge all the way through the end of your cut.
      Mirror Cutting Solid Surface

      Mirror Cut

      Mirror Cutting Solid Surface Zoom

      Mirror Cut Zoom

      The advantage of this method is if you do move slightly off the straight edge, this irregularity will be transferred to both materials equally and should still allow a clean seam.
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