Just spotted the answer in the doc''s, yes the ZB connector needs to be jumpered.

VB,

If removing the Z slave axis the doc says to jumper the ZB connector is that true?

VB,

Thanks David.

I'll be giving that a shot before long then.

ampapa,

This is on a heated bed with PEI… I hadn't thought about the print coming loose though.

Overnight shutdown...

I have the need to pause a lengthy print.

Since I've never done this before I was wondering what the process for implementing it is. Do I simply "Pause" the print and shut down the printer and laptop?

I assume I should home the machine before restarting? How does it know what line of code to start from when I fire up the printer again?

Any "how-to" would be great if there is one..

Thanks.

ampapa,

After homing, assuming I'm using -.01 as posted above my control panel shows Z at -0.1 that assumes a deflection of the piezo if I understand you post correctly. The -0.1 is then adjusted based on baby stepping and printing of the 1st layer and ultimately could be less or more and that actual number should be reflected in the config.g file, correct?

So in Slic3r I need a Z offset that reflects that actual number +/-… I think I understand.

Thanks,

One additional follow up question on setting the Z axis positioning.

[c]G31 X0 Y0 Z-0.1 P600[/c]

If the piezo is effectively able to find Z=0 then why the need for an offset in the config.g file? Is this to force the probe to go below the bed surface?

When the probe touches the bed surface shouldn't that effectively be the Z=0, no offset is needed from that point forward?

Thanks.

Can I adjust where the print head goes on my machine when hitting the "Pause Print" button?

Thanks.

ampapa,

Thanks for the quick feedback DjDemon.

I ran a first test with the unit and it seems to be working correctly.

https://youtu.be/rqbH40s8HNE

In my homing files (homez/homeall) what would that look like now, something like the following?

ORIGINAL homez.g

G91                ; Relative positioning
G1 Z-350 S1 F300   ; Move Z down until the switch triggers
G1 Z2.5 F300
G1 Z-5 S1 F150     ; Move Z down until the switch triggers
G1 Z2.5 F150
G90                ; Back to absolute positioning
G92 Z2.5           ; Tell the firmware where we ar

NEW homez.g

G91                       ; relative mode
G1 Z4 F200                ; lowers bed 4mm to avoid dragging nozzle over the bed
G90                       ; back to absolute mode
G1 X150 Y150 F4000        ; put head over the centre of the bed, or wherever you want to probe
G30                       ; probe
G91                       ; relative mode
G1 Z4 F50                 ; move slowly 4mm in the +Z direction
G90                       ; back to absolute mode
G30                       ; probe
G1 Z2.5 F150
G90                ; Back to absolute positioning

EDIT

Just wanted to close the loop on this and post my working Z homing file.

G91                     ; relative mode
G1 Z4 F400              ; lowers bed 4mm to avoid dragging nozzle over the bed
G90                     ; back to absolute mode
G1 X40 Y265 F4000       ; put head over the center of the bed, or wherever you want to probe
G30                     ; probe
G91                     ; relative mode
G1 Z4 F150              ; move slowly 4mm in the +Z direction
G90                     ; back to absolute mode
G30                     ; probe
G1 Z2.5 F150		;Move Z to 2.5 above the bed
G90  			;back to absolute
G1 X0 F4000 		;move to X0