Larry :
Very good advice, thanks.
I did some dabbling in 3D printing a couple of years ago. I forgot that you can open the files with
an STL viewer.
Our public library here in Ottawa has a lab with 3D printers, scanners etc and I did take their course.
I never did much with it so I have forgotten most of it, but printing it myself would be a cheaper option.
I envision using the Nano VNA in the field, so I would to keep most of the dirt out.
Cheers
Michael VE3WMB