MPCNC Square Check V2

Basically you print 2 Long Sides and 2 Short Sides of these and move the gantry as close to "home" as possible and then use these to check to see if the gantry conduit is square with the XY support conduit.

If your Machine is out of square just a little then before you start your "print" in RH just use these as a guide and apply a light squeeze to gantry support and the xy conduit until it is perfectly square then in RH's manual controls move that axis .1mm in a direction towards the square check. The holding force will hold the machine in square on that axis during your print as long as you don't do an emergency stop in between.