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  1. Cura will in fact do this... I've used it quite a bit... Are you thinking of something different? For example, take the model I provided, set it to have zero top layers, zero percent infill, and turn off ironing as @tinkergnome discovered to eliminate the phantom layer... you get a shell with four sides and a bottom. Now do something exaggerated to see the effect, like giving it a wall line count of 50. Cura retains the outside dimensions, and correctly calculates very thick solid perimeter walls expanding inward. (See screenshot below.) Likewise, you can tell
  2. Thanks @kmanstudios, appreciate the thorough investigation and solutions. Please don't take this the wrong way, or read it assuming a tone of my voice... but the model that I posted is as I intended. The purpose of this model is to be able to quickly generate a wide variety of simple rectangular tool tray inserts, of varying wall and floor thicknesses as appropriate for what they are expected to contain. Torsional rigidity is not a significant concern as these are inserts set on a supporting tray or drawer, but durability and puncture resistance are, so completely solid walls a
  3. Thanks @tinkergnome. Ironing being enabled does in fact seem to be a clue... but if it is in fact related to ironing, I think the ironing logic is faulty. When you hover your mouse over the "Enable Ironing" setting, the tooltip gives the following description: Enable Ironing Go over the top surface one additional time, but without extruding material. This is meant to melt the plastic on top further, creating a smoother surface. Two issues with this: 1) The print nozzle was making large diagonal passes from wall to adjacent wall over the empty space, not t
  4. Thanks @kmanstudios. Happy to provide files. Attached is the .3mf file for Cura - let me know if a .stl or anything else would also be useful. I believe it is a solid shape... I created the initial .stl in FreeCAD (version 0.16) by selecting the Part Design workspace, then clicking "Cube" on the Combo View's "Create Geometry" section on the left, then editing the dimensions. Less than a dozen clicks from start to finish. If I select this part in the Part workspace and click on Analyze Geometry, then view the Shape Content, it gives the following: Craftsman_Dr
  5. Thanks for the reply @kmanstudios. I didn't have "remove all holes" as part of my normal visible settings, so I enabled it and did some testing. I get the exact same result both with and without that option enabled. I set the wall line count to zero for my screenshot above just to make the issue more visible... but if I set it to something different (say 4), the result is a closed empty box (four walls, a bottom, and a top) - even when the 'top thickness' and 'top layers' values are both 0. In the preview, I can drag the layer slider down and back up, and see it fil
  6. Hey everyone. I'm having a strange issue with Cura 3.1.0. I have a rectangular tray I'm printing. The tray is modeled as a simple solid block, and then printed as an open tray by utilizing a 0% infill and zero top layers, so that only the bottom and side walls remain. For some strange reason, Cura seems to automatically add a top layer, even when zero layers are specified. I thought this was a fluke, so I proceeded with the print, and sure enough the printer attempted to print the top once it finished the side walls. I've attached a screenshot of my Cur
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