|
That plywood is seriously deteriorated. Threaded inserts aren't a good idea for plywood, much less deteriorated plywood.
If you can enlarge the hole to the point where you find good wood on the edges, then glue a plug into the hole. Epoxy a steel plate on the back side, as large as can be fitted to the area in question. If the red plastic thing is hollow, machine a metal plug to epoxy to the top side of the playing field, to give the plastic thing some lateral stability that doesn't rely upon the screw to hold it in place. Bolt the entire mess together.
|