You may have noticed a weird web of lines inside 3D-printed models. That's infill. Typically, the interior of a model is not solid plastic in FDM or FFF 3D printing. Rather, the slicer (software that ...

When you slice a 3D model to print, you have to make a decision about what the inside of that model will look like. Unless the designer created a custom internal structure, any open volume inside the ...