Create your own jigs and fences using a MagSwitch MagJig. Simple drill a 30mm hole into a board of jig with as maximum thickness of 3/4” and you have a way of securing the board. Add more switches, and the jig becomes more secure. Turning the switch 180° it engages the magnets.
The MagJig’s can be secured by screws for added peace of mind when using jigs.