Round object prints as a polygon

[nhulinsky 0]

Im new to Cura, I switched from Simplify for the better features. When I print a round object it prints as a multi surfaced polygon (Faceted). Can anyone help with this please?

[gr5 2,173]

It's probably when you export from CAD to STL that you get the polygons.  But if you do too many polygons you get other issues.  A good balance is to have at least 1mm between points on the polygon.

[nhulinsky 0]

Thanks. now when I get the mesh fine enough to slice round the preview is gray.

[gr5 2,173]

That's normal.  Move the vertical slider to the right for the colors to come back.  It's just highlighting the top layer on purpose.  To make it go gray again use the horizontal slider at the bottom.

[nhulinsky 0]

Thanks