I finally made a mount plate for my dual head belt driven extruder to go onto a MendelMax 2 carriage. It is laser cut from 5mm plywood, carefully belt sanded down to thick enough to provide a friction fit in the groove mount. The blue outline notes the version with 0.125mm radius cutter compensation for the laser beam. Use the white outlines if you are using some other beam compensation.https://www.youtube.com/watch?v=eigVJpgN9dgThe photo of the bare plate shows it backwards. Oops!