gCode for z-height calibration?

General Software
1

As I’m sure we all do, I’m always having to fiddle around starting/cancelling prints to get the 1st layer z-height correct as it changes with use, filament, etc. I’m using a Taz 6.

What I’d like is some gcode I could run that would just simply extrude a single .2mm high line, then 3 lines together like a solid would, so I can take measurements and adjust my z-offset and reprint until it’s dialed in. Then run the actual model through the slicer and it should be bang on. Is there some simple gCode like that or do I have to actually design something in cad and slice the stl using a filament profile?

I’m going to try to figure it out but if anybody has something already done it would be helpful.

2

Before we had automatic bed leveling standard on our printers, we needed to manually adjust the bed height. We used this STL file, which prints a single line height: http://devel.lulzbot.com/TAZ/juniperberry/production_parts/calibration/bed_calibration.stl

Feel free to scale it in the Z direction to get whatever height you would like to calibrate for.