Thanks guys, I'll try and see what happens.

@tig said: For general stl tools look here http://www.sketchup.com/intl/en/download/plugins.html This link is to Trimble's own free stl exporter launched last October... https://github.com/SketchUp/sketchup-stl and here's other stuff about it http://www.mastersketchup.com/installing-the-sketchup-stl-exporter-plugin/ Hi! Thank you!

Thanks for the comment. I try to [image: r9zz_byDzol.png]

I thought about past performance Bezier Surface will know something like that? Hi. [image: UYgj_project.jpg]

The same is rendered [image: SECP_render_3.jpg]