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Slic3r strange infill and quantity of filament.

Posted by animoose 
Slic3r strange infill and quantity of filament.
June 16, 2016 07:37PM
I have a 10mm test cube, 0.1mm layer height, 30% in fill. If I slice it in 1.2.9, it says that 454 mm of filament is needed. Slic3r 1.1.7 says 244 mm, and Cura says 250 mm. The first of these numbers is much more than the others. So what's going on?

Let's look at some layers in the preview. The first picture is from 1.2.9 and looks like more than 30%. The second picture is 1.1.7, and does not look like 30% infill to me. The third is Cura and is could be a true 30%. All pictures are layer 50, so half way through the print.

When printed, the cube from 1.2.9 bulges on one corner (though this could be a printer problem - [forums.reprap.org] is a separate topic on this issue). The one from 1.1.7 is OK except that the top looks a little weak, probably due to the strange infill. The Cura print is good.

Both versions of Slic3r seem wrong. Anyone have an explanation? Bug? Known issue? I am using the same config files for Slic3r 1.2.9 and 1.1.7. Perhaps that is the culprit.


See my blog at [moosteria.blogspot.com].
Attachments:
open | download - S129.jpg (55 KB)
open | download - S117.jpg (52.7 KB)
open | download - Cura.jpg (54.8 KB)
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