Originally Posted by
bonedoc
I did trip the z-axis switch, and the amount that it backs up is not enough. When you cut a sheet of ABS down to fit in the machine table, you will notice some arch to the piece. Although it would cut fine, it could pose a problem with the amount of back up the machine has. There must be a way to adjust the amount in software....but nobody from the supplier knows how to do this.
Also, you will notice that the tip of the laser can telescope in and out... there is no reference as to where it needs to be set and the relation the autofocus has to this. It is a possibility that the tip will smack the material.