Does anyone have tips for cutting box joints in MDO plywood? I am attempting to build a couple of large, utilitarian, storage drawers for the router table, and wanted to use box joints.
I built a jig for the router table miter gauge, set it up for 1/2" box joints, and used a new sharp spiral bit. The tear out was incredible on the front face of the workpieces. I did try using masking tape on the cutlines, and that, if anything, made it worse. Is it the MDO layer that is the problem? I know that Norm has used box joints in the past in plywood (or so I think he did).
I did use the box joint jig on some scrap pine before I tried the plywood, and it worked great.
I think that the photos attached ok of the test work.
What did I do wrong with this?
Doc
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