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Cobalt1

How to pause at z height to change filament?

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I'm about to buy an UM2+ or UM3 and wanted to know if some form of "pause at z height" (or z layer) is possible with the Cura software? If not, can I export gcode from the software, modify it to include a code to pause (M 25, M 226 or M 600), and then print that modified gcode?

Edited by Guest

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The bleeding edge cura 2.X - as of november 2016 I don't think it does support this. But I still use Cura 15.04.6 which supports this with a plugin. Older cura can be found here:

https://ultimaker.com/en/products/cura-software/list

You want the pause-at-z plugin. UM2 series printers all support pause from gcode but I'm not certain about UM3. I have a UM3 but I haven't tried to see if a gcode will pause the UM3. I'm sure UM3 will support it at some point.

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This M25 command worked in Gcode on my Ultimaker3.

(I have no idea why Cura2.3.1 generated it - I commented it out.)

;TYPE:CUSTOM

; -- Pause at height (5.00 mm) --

M25 ; Pauses the print and waits for the user to resume it

;LAYER:48

G0 X118.5 Y26.724 Z5.07

;TweakAtZ V5.1: executed at 5.07 mm

M117 Printing... tw@ 5.1

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(I have no idea why Cura2.3.1 generated it - I commented it out.)

It turns out the I must have been exploring Cura and ran the (preinstalled?) plugin TweakAtZ 5.1 without knowing what I was doing and left it on. I later sliced a bunch of models and found that it does add GCode to stop at a specified height that works with my Ultimaker 3. It also has an option to stop at a specified layer, but I have not tested that. I suspect that that "Pause at Height" mentioned by DaiHai8 works as well.

 

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I have a Ultimaker 2+ with Tinker firmware and Cura 2.5. "Pause at Z" works once but the second time it does not stop. Is there a minimum space between the "Pause at Z" usages. or have they still not fixed the software so you can use "Pause at Z" twice in the same model? I also noticed there are two other kinds of Pause at Z one for BQ printers and one for Repetier should I be using these?

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