How to access printer settings from Cura post-processing plugin?

[Sporech 1]

Hi All,

 

There are a few properties of the printer setup and slicer settings which I need to access from my post-processing plugin, such as nozzle diameter, line width etc.

Can these be accessed from the post-processing script environment?

 

Many thanks

[nallath 1,123]

24 minutes ago, Sporech said:

Hi All,

 

There are a few properties of the printer setup and slicer settings which I need to access from my post-processing plugin, such as nozzle diameter, line width etc.

Can these be accessed from the post-processing script environment?

 

Many thanks

Yep. The strech post processing script does something like that https://github.com/Ultimaker/Cura/blob/master/plugins/PostProcessingPlugin/scripts/Stretch.py#L519

There are probably more scripts that do it as well.

[bradk3 14]

I believe you can query all those settings from the Global Container Stack.  Here's some code I've used to get the layer height setting:

 

from UM.Application import Application

...

layerHeight = Application.getInstance().getGlobalContainerStack().getProperty("layer_height", "value")

 

It looks like "line_width" and "machine_nozzle_size"should also be an available settings. 

 

I'm not sure where to find a definite listing of the setting names, but I was able to find these by looking through this file here: https://github.com/Ultimaker/Cura/blob/master/resources/definitions/fdmprinter.def.json

 

But, that was just sort of a wag.

 

Good luck!

[ahoeben 1,955]

A bit less of a wag is this list (which is automatically created from fdmprinter.def.json and fdmextruder.def.json):

http://files.fieldofview.com/cura/Replacement_Patterns.html

[ahoeben 1,955]

1 hour ago, bradk3 said:

I believe you can query all those settings from the Global Container Stack. 

Layer height is a global setting, and can be queried from the global container stack; other settings, such as the line width, can be different per extruder, so you have to get them from the extruder stack.

 

 

from cura.Settings.ExtruderManager import ExtruderManager

...

extruders = ExtruderManager.getInstance().getActiveExtruderStacks()

line_width= extruders[0].getProperty("line_width", "value")

 

 

[Sporech 1]

Excellent, thank you all for your help 🙂

[awit 0]

@ahoeben

 

Hi, how to query a user-defined setting?

 

        retraction_amount = Application.getInstance().getGlobalContainerStack().getProperty(
            "retraction_amount", "value"
        )

 

The above code gives me the 'default' value, not the updated value, which I changed in Cura, and I was wondering how to access the InstanceStack (?), where user-defined settings are kept.

 

Thanks in advance!

[ahoeben 1,955]

Retraction amount is a per-extruder setting, and must be queried from the current extruder stack

 

 

from cura.Settings.ExtruderManager import ExtruderManager

...

extruders = ExtruderManager.getInstance().getActiveExtruderStacks()

line_width= extruders[0].getProperty("retraction_amount", "value")

[awit 0]

Thanks a lot!🙂