[infill modifier mesh gets printed first]

I print my parts "lying down" due to strength requirements.  This places the top and bottom on the "left" and "right" (actual location varies due to part placement).  So, I use modifiers to achieve the additional solid thickness required at the real-world top and bottom (thicker than the walls).   However, Cura wants to print one of the modifiers (the part's real world bottom), an interior infill section, before the part's walls.  This causes some defects.  I'd like it to print the walls first, as usual, and then the modified infill sections as part of the infill, just with higher density than the rest of the part.  It does print the top modified infill as desired, after the walls.  Part of the difference may be due to the user specified Z seam alignment, as the bottom is located at the desired Z seam location, while the top is at the opposite end of the build plate.  To be clear, the current modifiers are the entire top and bottom 5mm of the part.  I haven't tried modifiers that are just the interior (minus the wall thickness), which I could do, but it's more of a modeling hassle.

 

For the modified sections, I use either increased Wall Line Count, or 100% Infill Density, although Wall Line Count seems better or at least faster, even though it's really 100% infill that I'm after.

 

Speaking of the Z seam, I'd like it to be at the "center of the bottom" of the part - a flat section, not a corner.  The only way I've been able to achieve this is to add a "fake" corner at that location via an extruded polygon (which I then grind off after printing).  Is there any other way to force the Z seam to be at a location that's not a corner?  

 

Screen shot shows the bottom printed, and the outer wall starting off.

[Ultimaker Cura Arachne Engine Beta 2]

20 hours ago, ahoeben said:

Did you know there's a helpful search field atop of the settings that helps you search for settings? It also shows settings that have not yet been made visible.

 

The whole idea of NOT making all of the >300 settings visible is to make it easier to find the often-used important settings. Need something advanced? Use the search feature. Turns out you need that advanced feature often? Make it visible. Personally I like staying on the "Basic" set of visible settings, and use the search for the rest.

@ahoeben  Thank you - I agree that search can be helpful.  However, if you don't know the name of a feature, it's quite difficult.  In regular Cura it's "outer before inner walls."  In S3D the it's "outline direction".  In PrusaSlicer it's "external perimeters first."  (And very easy to find.)  Searching with most of those keywords doesn't bring up "wall ordering."  If you know that the feature name has the word "wall," you will find it buried amongst ~80 other features.  So for me, search wasn't helpful in this case.  Second, this feature isn't advanced, but one of the most basic or fundamental.  It often makes the difference between a print completing, or utterly failing.

[Ultimaker Cura Arachne Engine Beta 2]

@JackW327 Thank you!  I searched and searched for that setting, and couldn't find it.  Finally realized I had to "manage setting visibility" and enable it (along with many many other features!).   Strange to me that new and/or Arachne-specific features would be disabled by default...

[Ultimaker Cura Arachne Engine Beta 2]

Hi:  This seems really great!  However, no Outer Before Inner Walls option?  My parts aren't printing well with what seems to be the default or hard-coded inner before outer.

 

Thanks.

[Cannot select a Part]

Same here, after upgrading to Cura 4.8 on a Mac with Big Sur Ver 11.1.  Related, I can select via Edit / Select All Models, or ⌘A, but then can't use some tools that require a subsequent click / select (eg, Select face to align to the buildplate just deselects).