I was a little hesitant to flush a clean sheet of plywood down the toilet with my first true test after calibration (just in case I calibrated it incorrectly). My solution was taking securing a sharpie in the router chassis using a role of toilet paper and letting the Maslow draw on some paper duct taped to the plywood. Those this method seems like it should be on Red Green’s “Handy Man Corner,” it actually worked well and was easy to set up. Everyone should have toilet paper, paper and a marker at their house so I thought I would share for those who want to do a quick test of the system.