Hi Marco,

i usually export for 3D printing as triangles from MoI and not as NGons.
I assume that Shapeways Display Software displays it not smooth when
not triangles. I would simply do another check with triangles export from
MoI and see if it looks better.

The prints i do at work (in colored sandstone) with MoI look also never
facetted.

Why i look for high cost printing? Maybe i did not formulate my words
good enough... what i mean is i prefer high quality prints when
printing something for myself. And high quality prints are expensive
when using 3D Printing Services.

If i would do a lot of 3D Printing i would maybe look into purchasing
a resin printer which outputs good quality, like the FormLabs2 printer
etc.

Regards
Stefan