Im new, am a 3D designer. Need a New cnc machine and need advice and guidance

[Robin Hewitt]

Doesn't make a Jot of difference

I can tell you have never had to write the manual

Problem with writing the manual is you have to cover all the bases, because you know some geek is going to figure out the problem and ask you why it isn't a problem. You have to try and out geek the geeks by spotting all the snags before they do. Patting a geek on the head and saying, "Don't worry about it sonny" does not work. They can smell fear.

Let's suppose your driver(s) are the forgetful step pattern kind. They always fire up on the same pattern, a pattern that will repeat every 1.8 degrees.

Now suppose you parked the machine 0.9 degrees out of phase to that so when you power up it can leap either way.

Suppose one leaps CW and the other CCW, both equally valid. The gantry is now out of square. You can bump every home switch in Christendom but the most you can do is detect the error, you can't fix it unless you can drive the motors independently.