I have a printerbot  simple metal with heated bed.

3D Printing
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I have a printerbot simple metal with heated bed. This printer has a auto level probe. How can I set my Z offset height using commands in terminal to get the exact -.2 .-4 height that I need? I did try Mattercontorl method to set Z offset but its not exact and need to get lower on my Z axis. Can I use these commands? http://help.printrbot.com/Guide/2.+Setting+Up+Your+Auto-Leveling+Probe+and+Your+First+Print/107
http://www.mattercontrol.com/

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Anyone using Mattercontrol with a printrbot simple metal?

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The Printrbot guide is what you’re looking for. Just do it!

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So can open terminal in Mattercontrol and use the same commands such as in Cura to set up Z axis offset? Thanks Thomas

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Yes.

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Isn’t Z offset saved to the PB firmware? It should persist between software, if I understand the operation correctly.

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@Tom_Nardi that’s what the M500 command does. Set it once and it stays with the printer, independently of the host software.

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Well so you can’t use 2 different software packages to print on the same computer? If it writes the Z offset to the printer then if you fire up another slicer it will be off. Very confusing

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@John_Car there’s mo need to have different offsets for different slicers. They all assume a perfectly adjusted printer unless you tell them otherwise.

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Understand but when I installed MatterControl and tried to print a test cube the Z offset was to high and the print cube turned out really bad. I wonder if the automation level function on Mattercontrol screwed up the settings. I am going to try to print a test cube using Cura to see if that is the case.

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Thomas you should test this and make a video on the subject. Load up Mattercontrol and Cura and do a proper video explaining how to setup both on the same computer. Sure you will get a lot of views on the subject.

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@Thomas_Sanladerer I think i found the issue. The startup Gcode for mattercontrol is only
G28 X0 Y0
G29
Which I think resets the offset from the one that is set on the printers board.

Cura startup Gcode is

G21 ;metric values
G90 ;absolute positioning
M82 ;set extruder to absolute mode
M107 ;start with the fan off
G28 X0 Y0 ;move X/Y to min endstops
G28 Z0 ;move Z to min endstops
G1 Z15.0 F{travel_speed} ;move the platform down 15mm
G92 E0 ;zero the extruded length
G1 F200 E3 ;extrude 3mm of feed stock
G92 E0 ;zero the extruded length again
G1 F{travel_speed}
;Put printing message on LCD screen
M117 Printing…

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Yep that was the issue I added the same Gcode to Mattercontrol startup and perfect print.