Easy z-offset adjustment for your 3D printer.

This is an absolute beginner's tutorial on setting a 3D printer's z offset when you have a bed leveling probe installed such as the BL Touch or CR Touch. I don't only tell you how to do it, I also explain the relationship between leveling the bed with an ABL and the z offset. in order to extend the probe I installed the OctoPrint BLTouch plugin which can be found here: https://plugins.octoprint.org/plugins/BLTouch/