PYTHON OR BASH CURA INTERFACE

[navarro_lautaro 0]

Is there any python or bash interface for use Cura?
I would like to generate gcode from a .stl file through python (prefered) or bash. Also, calculate the price for the print given a certain configuration

[ahoeben 1,890]

It sounds like you may want to skip the Cura frontend and slice directly using the CuraEngine slicer. This is what Cura does in the background.

 

CuraEngine does have a command-line interface, and it is possible to specify a model and all the settings. As an aside, Cura does not use the command line to communicate with the CuraEngine, but it uses a socket to send models and settings to the engine (using a protocol named "Arcus", see https://github.com/Ultimaker/libArcus).

 

The CuraEngine command-line interface has the following options for slicing:

CuraEngine slice [-v] [-p] [-j <settings.json>] [-s <settingkey>=<value>] [-g] [-e<extruder_nr>] [-o <output.gcode>] [-l <model.stl>] [--next]
  -v
        Increase the verbose level (show log messages).
  -m<thread_count>
        Set the desired number of threads.
  -p
        Log progress information.
  -j
        Load settings.def.json file to register all settings and their defaults.
  -s <setting>=<value>
        Set a setting to a value for the last supplied object,
        extruder train, or general settings.
  -l <model_file>
        Load an STL model.
  -g
        Switch setting focus to the current mesh group only.
        Used for one-at-a-time printing.
  -e<extruder_nr>
        Switch setting focus to the extruder train with the given number.
  --next
        Generate gcode for the previously supplied mesh group and append that to
        the gcode of further models for one-at-a-time printing.
  -o <output_file>
        Specify a file to which to write the generated gcode.

The resulting gcode contains a comment with how much material is used (in meters). You can calculate the weight from the filament diameter and the density of the material.

[gr5 2,097]

For example settings.def.json files you should look around in the folders that Cura creates.  For example on windows I think maybe it's in %appdata%/cura.   On linux I think it's in ~/cura/share/cura/resources/

 

Just search for files on your computer *.def.json.

 

 

[ahoeben 1,890]

3 hours ago, gr5 said:

For example settings.def.json files you should look around in the folders that Cura creates

 

Except those folders will rarely contain any .def.json files. Files ending with .def.json are mostly "machine definitions", and they are located in the resources folder of the application bundle.

https://github.com/Ultimaker/Cura/tree/master/resources/definitions

One thing to note is that CuraEngine only ever uses "default_value" and completely ignores "value".

[gr5 2,097]

Well I have 154 of those files and for me they are all in the ~/cura/share/cura/resources/ folder.  I really don't know where they are on windows.

[navarro_lautaro 0]

On 12/18/2019 at 1:21 PM, gr5 said:

For example settings.def.json files you should look around in the folders that Cura creates.  For example on windows I think maybe it's in %appdata%/cura.   On linux I think it's in ~/cura/share/cura/resources/

 

Just search for files on your computer *.def.json.

 

 

Can you provide me a json example? I was not able to find it on my linux computer!

[gr5 2,097]

On linux just type "locate .def.json"

 

Anyway you can see all of them here just as easily as ahoeben says: https://github.com/Ultimaker/Cura/tree/master/resources/definitions

 

[navarro_lautaro 0]

18 hours ago, gr5 said:

On linux just type "locate .def.json"

 

Anyway you can see all of them here just as easily as ahoeben says: https://github.com/Ultimaker/Cura/tree/master/resources/definitions

 

That's perfect! Thanks you guys for your support!

[tobias_m 0]

Hey together,

 

did anyone try here the libArcus library or the python bindings from https://github.com/Ultimaker/pyArcus ?