For my own use no problem but Not a good selling point when building for others.cnckeith wrote: ↑Mon Jan 01, 2018 7:47 pm For Acorn there are several techniques to square a paired axis gantry, they are all mechanical in nature. basically you must square the gantry axis mechanically before releasing estop and homing the machine, since once you do that the two motors are electronically paired from then on. some guys make up hard stops and simply drive the gantry close to the hard stop and finish it up by turning by hand into the stop, then release estop and home the machine.
Do use Hybrid sometimes but not always possible on lower budget machine or machine with existing steppers/drives.
This axis decoupling hack was my hope if couldn't be done easily. (Which is basicly how Mach3 did it using PP) Don't mind getting dirty so long as the end result gives the desired affect and looks professional and is invisiable to enduser.cnckeith wrote: ↑Mon Jan 01, 2018 7:47 pmthere is a crude work around for Acorn if you really want a software/electronic solution to square the gantry, warning: you've got to jump thru some hoops for this one..., basically you home the gantry off one limit switch on one side in 3+1 axis paired mode, (at this point it will not be square). then restore a report that puts cnc12 back to 4 axis mode, run a gantry G&M program that now homes each side of the gantry separately off its own limit switches (that you have arranged to be square) now it will be square, then restore a report back to the 3+1 paired axis mode and home out right where the machine is sitting. now its square and ready to run.
Thanks Keith I can see I'm going to enjoy this controller.