Make Your Own T-Shaped Adjustable RUNNERS for

I believe the miter bar is meant to be 516 x 2332 in size, but the standard miter slot on most table saws is designed for a 38 x 34 miter bar

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miter slot These solid aluminum miter bars from Rockler have nylon set screws that adjust in or out for a perfect fit in any standard 34'' x 38'' miter slot

miter slot runners OpenSCAD code for creating modular miter bar slot runners for table saws, routers, etc - noisemiter-slot-runners