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Release Arachne engine beta


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Posted · Release Arachne engine beta

Hi everyone,

 

We are very happy to announce our Arachne engine beta release. This release is more stable than the alpha that was released in December.

If you are new to Arachne please read this post about our alpha release.

 

So what is new in Arachne engine beta?

 

Line width color scheme:
A new color scheme has been added that shows the line width of individual lines in layer view.

2091035880_image(5).thumb.png.fb3dd1de29ba288a7c59d97eee4c9eb3.png

Model credit: By asimomagic is licensed under the Creative Commons - Attribution license

 

Static Outer Wall:
The outer wall will no longer adjust its width or position if there are any inner walls adjacent to it with the (inward) distributed line width strategy. This reduces ringing effects in thin shapes.

 

Which settings needs testing?

The improved Ultimaker Cura engine gives you new settings that will optimize printing thinner walls, including: 

  • Variable Line Strategy (3 options: Center Deviation,  Distributed, Inward distributed) 
  • Minimum variable line width
  • Wall transition length 
  • Wall transition angle 
  • Wall transition distance filter 

 

If you decide to tune these settings and doing so results in better print quality, please share your findings with us. Doing so will help us set default values for both Ultimaker and third-party printers. 

 

For all the bug fixes and known issues please read the release notes.

 

How to start testing:

1.       Download Cura Arachne engine beta.

2.       Run some test prints that you’re familiar with.

3.       Consider trying a print with thin walls to test the difference.

4.       Share any feedback or bugs via Github

 

Before you are sending feedback:

  • Please read the release notes (link). There you can find our known issues, this will prevent extra work on your end and ours.
  • Keep in mind that the profiles have hardly been tuned, even for Ultimaker’s own printers. Don’t expect perfection. In fact, the default settings as they are now likely result in a worse print quality that the stable release.

 

Note: This is not based on a specific stable version of the front-end of Cura (like '4.8.0' or similar), so there may be issues that have been solved or introduced since then that have little or nothing to do with the variable line width feature-set!

 

Now you have the chance to peek into Ultimaker Cura’s future, test these settings, and see how they work for you! 

 

Looking forward to see your prints 🙂 

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Posted · Release Arachne engine beta

Oh joy.  Another learning curve.

 

Torgeir, with so much work having been done under the hood, don't you think congratulations should wait until after the test drive?  I know there was a lot of effort put into Arachne, but will that translate into performance?  Will it be like putting a high lift cam and headers on?  Tuning the fuel injection?  Re-mapping the ignition curve?  Or will it be more like adjusting the seat.

Only time will tell sir... only time will tell.

 

 

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    Posted · Release Arachne engine beta

    Hi Greg,

     

    Well, to be sure I've been playing a lot with "Alpha" and seeing all the changes done to "Beta" -just tell me a story..

    Ofc., it is still an experimental slicer, but with a "huge" potential.

     

    Torgeir

     

     

     

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    Posted · Release Arachne engine beta
    On 3/12/2021 at 3:20 PM, GregValiant said:

    Oh joy.  Another learning curve.

     

    Torgeir, with so much work having been done under the hood, don't you think congratulations should wait until after the test drive?  I know there was a lot of effort put into Arachne, but will that translate into performance?  Will it be like putting a high lift cam and headers on?  Tuning the fuel injection?  Re-mapping the ignition curve?  Or will it be more like adjusting the seat.

    Only time will tell sir... only time will tell.

     

    More like a "Make sure the engine doesn't explore in the many ways that people have been able to let it explode"

     

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    Posted · Release Arachne engine beta

    I'm constantly dazzled by the Cura Team's (and FieldOfView, SmartAvionics, et al) ability to keep Cura on the cutting edge while juggling the needs of:  multiple operating systems, computer platforms, gcode flavors, and printers.  As with any extremely complicated system, people (who ALL run operatorware "dumb1") will do something totally unforeseen that will cause it to break.  With the installed base of users/debuggers out here, the number of what I would call "valid" bug reports is amazingly low.

     

    I decided to make a color change to the dust/rain covers on my cafe bike.  Using Arachne and Arc Welder they came out superb.  They were very good before (using 4.6 I think), but between the new software capabilities and my own advancing slicing skills, they came out looking "store bought".

    While doing the above, I think I found a minor bug (duly reported on Github).  There is some satisfaction in making a microscopic contribution to the massive effort.

     

    The bug had nothing to do with wanting to run Cura on my Cray super-computer running Windows 3.0 with 5 monitors and my home built dual-extruder printer (one is a 2-in-1-out and the other a 3-in-1-out) that has firmware developed by NASA and is connected via parallel port.  Should I re-level the bed?  Should I wait for the wife to get up before I do that?

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    • 2 weeks later...
    Posted · Release Arachne engine beta

    Hello ,
     No I don't know if it has already been proposed or it is possible to implement such a function but I ask:

    Is it possible to make the print bed begin to cool slowly by itself after the print has reached a predetermined percentage of work so that at the end of the job it is easier to detach the piece from the print bed?

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    Posted · Release Arachne engine beta

    You can use the post-processing plugin "Change At Z".  That plugin does have some issues (the "By Height" option does not work well with adaptive layers or Z hops - they confuse it) but the "By Layer" option will work fine.

    The second issue is that "Change Bed Temp" does not work with "Target Layer Only".  That shouldn't be a problem with what you're trying to do.

    So under "Extensions" select Post-Processing and Modify G-code.  In the dialog that comes up select "Add a Script" and pick "Change At Z" from the list.

    Within the Change at Z options select "By Layer" and then "Target Layer + Subsequent Layers" and then enter the bed temperature you want to finish the print at.

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    Posted · Release Arachne engine beta

    I noticed that the "spiral mode" function does not work as it should ... In the print preview I see 2 perimeters ... Am I wrong something or a bug?

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    Posted · Release Arachne engine beta
    8 hours ago, tamerlanOne said:

    I noticed that the "spiral mode" function does not work as it should

    This is listed among the "known issues" here:

    https://github.com/Ultimaker/Cura/releases/tag/Arachne_engine_beta

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    Posted · Release Arachne engine beta

    'Pause at height' does indeed work in Arachne. I just tested it out a day or two ago on a long print.

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