Is it possible to print thick polylines with sharp corners and ends?

I’m trying to get some polylines printed with heavier print widths. Their corners should be mitered sharp and ends square. All I’m able to print appear with rounded ends and corners. Am I trying something impossible or have I missed a setting somewhere?

I’d appreciate any information on this

Please upload your file you are trying to print I may be of some help. Danny

there are several topics about this in the forum, most of them says is not possible in plain Rhino, you need a vector program like Corel, Inkscape or similar.