I know, it's weird. I'm building a new miter saw station and want to make the platforms on either side of the saw height-adjustable so I can tweak them for level. I plan to put T-nuts under the platform supports with set screws in them accessed through a hole in the top surface. The set screws will push against the plywood sub base though and sink in. Anybody know of a metal insert I could mount into the 1/2" plywood to give the setscrews something to push against?