Jump to content
rooiejoris

Cura multiple [4!] extruders json works, GUI doesn't

Recommended Posts

Posted · Cura multiple [4!] extruders json works, GUI doesn't

Hi,

I want for an experiment slice something with 4 extruders. I managed to change the definitions json and added the necessary exruders json files and Cura starts OK. I can chenge the number of extruders in the machine settings, but I don't see the 3rd and 4th extruder in the GUI/menu on the right. I also don't see in in the right mouse button menu.

Is this a [known?] bug or am I missing something...

some snippets of the definitions json I changed:

"machine_extruder_trains":

{

"0": "ultimaker_original_dual_1st",

"1": "ultimaker_original_dual_2nd",

"2": "ultimaker_original_dual_3rd",

"3": "ultimaker_original_dual_4th"

},

cheers / joris

Share this post


Link to post
Share on other sites
Posted · Cura multiple [4!] extruders json works, GUI doesn't

Have you tried starting with the Custom FDM Printer in the GUI? It comes with (up to) 8 extruders.

You may have missed some changed when you edited the definitions for the Ultimaker Original Dual Extrusion.

Share this post


Link to post
Share on other sites
Posted (edited) · Cura multiple [4!] extruders json works, GUI doesn't

If you want to use your json files, make sure that apart from changing "position" in "metadata" and "default_value" in "extruder_nr", don't forget to change "maximum_value" in "extruder_nr" to "3" for all 4 extruder json files.

Yes, there's quite a bit of redundancy in those files.

Edited by Guest

Share this post


Link to post
Share on other sites
Posted · Cura multiple [4!] extruders json works, GUI doesn't

Same here. Tried to add a 3rd extruder to the Mark2 profile. Double checked all the position, default_value, maximum_value settings in the 3 corresponding extruder json files. Even removed everything in the Mark printer definition json to make it look like the custom json.

No success.

Share this post


Link to post
Share on other sites
Posted · Cura multiple [4!] extruders json works, GUI doesn't

I have reproduced this, and I'm looking into it.

Share this post


Link to post
Share on other sites
Posted · Cura multiple [4!] extruders json works, GUI doesn't

Could you try if adding a new printer with the same definition fixes the issue? I could reproduce the issue, but now I have made a couple of changes and I can't reproduce it anymore.

Share this post


Link to post
Share on other sites
Posted · Cura multiple [4!] extruders json works, GUI doesn't

Same here. Tried to add a 3rd extruder to the Mark2 profile. Double checked all the position, default_value, maximum_value settings in the 3 corresponding extruder json files. Even removed everything in the Mark printer definition json to make it look like the custom json.

No success.

 

Don't forget to increase the default value for "machine_extruder_count" in the definition file.

"machine_extruder_count": {

"default_value": 3

},

I made a quick test... works for me... :)

3rd_Extruder.PNG.fabbd7a58c7e4b8fe3718d649bfc570b.PNG

3rd_Extruder.PNG.fabbd7a58c7e4b8fe3718d649bfc570b.PNG

Share this post


Link to post
Share on other sites
Posted · Cura multiple [4!] extruders json works, GUI doesn't

That should not be necessary (Custom FDM Printer has "machine_extruder_count" set to 1), but if it works it works ;-).

Some more tinkering is in order here. It could be an issue with cache (there's a cache in ...\AppData\local\cura\).

Share this post


Link to post
Share on other sites
Posted · Cura multiple [4!] extruders json works, GUI doesn't

Cleared cash, tried with machine_extruder_count set to 3 and without the machine_extruder_count entry on 2.6.0 and 2.6.2, still no success.

I'm on OSX, you're on Windows Tinkergnome?

Share this post


Link to post
Share on other sites
Posted · Cura multiple [4!] extruders json works, GUI doesn't

> adding another printer with the same def files works!

I think that's going to have to be the official workaround for now.

Share this post


Link to post
Share on other sites
Posted · Cura multiple [4!] extruders json works, GUI doesn't

.. but adding another printer with the same def files works!

can't find the cache files on my mac

how do you mean 'exactly' adding a printer with the same def files...?!

add printer, close cura, copy paste definition json in the new printer definition json...?!

cheers / joris

Share this post


Link to post
Share on other sites
Posted · Cura multiple [4!] extruders json works, GUI doesn't

no, just add the same printer within Cura once again. It will be named ...#2 and shows all extruders

Share this post


Link to post
Share on other sites
Posted · Cura multiple [4!] extruders json works, GUI doesn't

Disregard what I said about cache, do what @foehnsturm says. The newly added printer will get the same profiles the old one has, including your custom profiles.

The problem you have encountered is that when a printer is "added" in Cura, a stack.cfg file is created for all possible extruders (in the "extruders" folder in your configuration folder). If you add new extruders to the definition, there will be missing stack.cfg files for the current printer, but these will be correctly created for any newly "added" printer.

Share this post


Link to post
Share on other sites
Posted · Cura multiple [4!] extruders json works, GUI doesn't

If you still need help with this, drop by the next time you are in the office. I'm happy to help you set it up.

Share this post


Link to post
Share on other sites
Posted (edited) · Cura multiple [4!] extruders json works, GUI doesn't

Forgot to mention: The easiest solution is not to mess around with json files at all and just use the Custom FDM Printer, which comes with up to 8 extruders

And you are welcome in my office too ;-)

Edited by Guest

Share this post


Link to post
Share on other sites
Posted · Cura multiple [4!] extruders json works, GUI doesn't

Adding the printer works...!

But that shouldn't stop me from dropping by in all offices....

Thanks...!

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Our picks

    • Ultimaker Cura 4.0 | Stable available!
      Ultimaker Cura 4.0 is mainly focused on the improved user interface and cloud integration.
      As always, we want to collect your user feedback for this release. If there are any improvements you can think of, feel free to mention it here and help us to shape the next release.
      • 96 replies
×
×
  • Create New...

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!