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Cura 5.* can't slice, but 4.* is...


Casper1313

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Posted · Cura 5.* can't slice, but 4.* is...

Hi.

 

I have all Cura version are installed on my PC from 4.12.1 (every updated version do not uninstall previous one).

I try to slice with default Fine 0.1 with nozzle 0.4 pre-settings (with support active).

Cura 5.*'th versions stack on ~80% slicing, and using Threadripper 2950x nearly by max. But even after 10 minutes, no result.

Cura 4.2.13 did it within 20 seconds on same default pre-setting. (don't worry about custom name of setting, there are just brim customization, same result with clear default pre-setting)

 

Yes, the model is not brilliant (downloaded as is), but ? is same, what's the problem with 5.*'th versions of Cura.

I attached .stl, if you want to try it yourself. Scale 1000%

2022-10-27_103334.png

2022-10-27_103358.png

312712470_Clocktop.STL

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    Posted · Cura 5.* can't slice, but 4.* is...

    5.x is definitely slower.  Part of it is the resolution of the model files.  I'm starting to see some with triangle densities that are on the order of 160 triangles in every square mm.  That's a lot of vertices to slice through and figure out the line width that is appropriate.  Your model is pretty dense at full scale but at a 10x scale factor the density drops to 10% of what it was.  The slicing still takes a long time though.

     

    I liked 4.13.1 a lot.  When 5.0 came out I decided to move to it exclusively as it is the coming thing.  All-in-all I've been pleased, but I tend to print industrial type items rather than artsy-crafty stuff.  As a consequence my models aren't as "organically" shaped and so aren't as complex.

     

    An advantage to 5.x is that when I design objects I no longer have to take into consideration the wall thicknesses.  Instead of me designing thin walls that were always an even number of "line widths" I can now design them for function and Cura adjusts so the extruded walls fill the model walls as designed even if there is an odd number of extruded walls required.  But that condition only applies to Thin walls.  If a wall is 10mm wide then it doesn't matter.

     

    I spend time on Github going over bug reports and some of the models involved in the reports are ridiculously complex and seem to take forever to slice in 5.x.  That level of resolution in a model is (in my never humble opinion) dumb as there is no way that the FDM process can create a physical object with that level of resolution.  It sure affects the slicing process though.

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