Directly Print to Your Local Printers
The highly automated new Version 11 function Printout3D allows you to directly print to your local printers.
In[1]:=
model = Import["http://exampledata.wolfram.com/vase.stl"]Out[1]=

Use the default previewer application on your system.
In[2]:=
Printout3D[model]
Out[2]=

Upload to the Cura slicer.
In[3]:=
cura = StringTemplate[
"/Applications/Cura/Cura.app/Contents/MacOS/Cura `file`"];In[4]:=
Printout3D[model, Printout3DPreviewer -> cura];