If you're like me and you bought an M5C before an M5, you really miss the little alignment tabs on the back of the heated build plate on the M5C. There's no permanent way to add those to the M5 (it does some nozzle wiping on the back edge, which on the M5C was moved to the front and side), but there's no reason you can't have a tool to help! Hold this against the back of the heated build plate with your weak hand, slide the removable build plate against it at a 45° angle, and lay it down for great alignment every time. Just look at that beautiful alignment in the last picture!