Summary

Build your own bench dog ready MFT table with jigsaw templates.

Print as many of the templates you need (maybe a full table) or a few and fix them with screws (3.5x25 posidrive) and move the other individual plates. The hole is 30.1 mm, it should fix a router with 30mm guiding / copy insert.
Print with seams painted on the round corners (seams can add a little filament, on the rounded corners it doesn't matter) and app. 5 walls and 25% infill. The 30.1 mm hole always has a seam, remove it if necessary with sand paper, file or dremel.

Printer calibration and PLA quality is important. If set correctly they should fit and measure 95.9-96.0. If not a little sanding or a dremel with a steel brush to smooth the jig saw parts

They use app 45g filament each. I use leftovers on spools