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Prince Ping-Pong Table Surface Leveler
Mary redesignated the Prince Tournament 6800 ping-pong table that Came With The House™ as her quilting layout table, so it now fills much of the Sewing Room (f.k.a. the Living Room):

Mary with quilt on ping-pong table For reasons lost in the table’s history, the two halves of the top surface weren’t quite flush on one side, by a matter of a few millimeters. This bothered me far more than it did her, so the delay until I finally fixed it wasn’t critical:

Prince ping-pong table leveler That’s 3 mm plywood + 1.5 mm Trocraft Eco pushing the surface upward just enough to almost make the joint (visible near the bottom of the picture) flush within +2 -1 mm across the table width, making it obvious that neither piece is exactly planar.
The shape has mixed metric and inch dimensions, for no reason I know:

Prince ping-pong table leveler If you ever need such a thing, remember to use screws about 4 mm longer than the ones you took out.
The LightBurn layout as an SVG image:
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