3D Offsetting

3D Offsetting is a feature unique to Pathio, and impacts what other slicers would call perimeters, as well as solid top and bottom layers. Instead of these concepts, Pathio uses Shell Thickness to simplify your prints. This lets you adjust the solid area of plastic that bounds your infill — on all sides. This means that your print will have a solid shell of uniform thickness on all sides (and all angles).



In Pathio you have one setting (Shell Thickness) to control how thick the solid bounds of your print should be. Compare that to:

  • 6 in Simplify3D Version 4.0.1 (Top Solid Layers, Bottom Solid Layers, Outline/Perimeter Shells, External Thin Wall Type, Internal Thin Wall Type, Allowed Perimeter Overlap)

  • 12 in Cura Version 3.4.0

  • 5 in Slic3r Version 1.2.9

Of course, we still have the granularity of those settings if you need them, but for everyday slicing you can stick to just the one.


By having a uniform shell all the way around your print, you’ll have a consistent strength of the shell no matter how you turn your model. This is most noticeable when looking at models with a 90 degree concave angle. On the interior of this angle you’ll see Pathio generates the correct amount of filament


From a printing perspective, 3D Offsetting also gives some benefits when printing top layers. Our algorithm generates the top layers of your print on top of some of the preceding layer’s perimeters, giving them extra support and helping them print smoothly.


3D Offsetting requires doing some more complex math than the traditional perimeter algorithms of other slicers. This means that our slicing will be slower.