My large w/s table had issues staying coplanar with the tape field. Heavy workpieces can cause quite a sag on the unsupported end. These levelers work great to fix the problem as they allow for easy, minute adjustments. I used a pair of lever arm lifters (Amazon) and some 2x3 legs.
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Jigs & Fixtures
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A pair of lever lifters, (2) 2x3x your custom length legs, (6) 5/16 x 5/8" long hex bolts, (6) inserts for 5/16" bolts, (2) fender washers, epoxy for the inserts.
Drill, hand tools for installing inserts, wrench.
I fastened the bottom of the lifters to the underside of the table using 5/16" x 5/8" long hex bolts in brass inserts. The legs are held in place with another bolt/washer set into an insert epoxied into the top of the legs. The photo with the straight edge shows the perfect alignment of tape field and the workpiece atop the support table. No more sagging! And since the lifters are so handy for other tasks, I didn't want to dedicate a pair just to this job. They go on and come off in a snap.
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