I need to create a PDF from my drawing to send to a photo etching company. I'm using hatched areas with the SOLID pattern but when I create the PDF I am not getting nice clean filled circles.

File/export does not seem to allow control over scaling. I need 1mm on the drawing to be 1mm on the PDF so I tried the print dialog instead.

The built in (to Draftsight?) PDF printer renders small circles as polygons. The middle one below is 1mm diameter on the drawing. An 8 sided polygon is not a good enough representation for what I need.

The Microsoft PDF print driver seems to do even worse - circles become very ragged with spurious 'hairs' on the smaller ones and the fills for larger areas have strange lighter lines in them.

This is Draftsight 2017 on Windows 10.