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Cura not Slicing inside my object

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Hello, this is my first post here as I encountered a problem when trying to slice a 3d model. 

I am creating the shape on Rhino and exporting it both as .obj and as .stl to Cura. The object loads well however when I try to slice it I lose all the information inside the outer box (as you can see in the images). Is there a way that I can print this design without losing any detail and ideally print in one continuous line? Thanks. 


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I am not really familiar with Rhino, so here are a few random suggestions; 

Could it be that in the export you may have missed a setting? Maybe it is not a solid?

Are the walls too thin?

If you are using Cura 3.2 (latest stable), there is a plugin available called MakePrintable. It provides fixing functionality, which may help you. Not every output from a CAD tool is automatically fit for 3D printing from the start.


In Cura I think you would want to set wall thickness to 0.4 (or whatever nozzle size you use) for a single walled object. Why exactly would you want to print it in 1 line? 

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I'm pretty sure the walls are too think.  Try setting the line width to 0.1mm just as a test.  The walls should show up.


You might want to try the "print thin walls" option which will allow you to print down to about .4mm walls with a .4mm line width.  A .4mm nozzle can go safely down to line widths of 0.35 and even .3mm without too much deterioration in quality.  You might need a 0.25mm nozzle though or a .15mm nozzle or a .1mm nozzle (from 3dsolex - I sell this in USA in my store at thegr5store.com).


Or you might just want to make the walls in this design thicker.



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