Pipe-mount

Generic mounting "thing" to apply on a pipe when one need to fastening something to it.
First case is as mount base for solar panels on an arch on a sailing yacht...

Need to find out howto round the corners on the lower part. Not so complex for
straight edges like on the upper part but howto make the "corner rounding tool"
follow the curved edge... probably need to recap some math lessons :-)
Code is at https://github.com/saxofon/pipe-mount if anyone knows howto do it.

Update1: with some time learning about rotate_extrude()... it is almost there.
Good enough for now at least. :)