I have looked and searched for an easy way out but have come short. I want to make setting circles with a vernier scale for my DIY equatorial mount in the making.
But circles as a strip, such as one finds on commercially made mounts, from worse to better quality. I have access to a laser engraver, and think of taking a thin strip of brass or other metal and laser engrave it then cut it out and make it into a ring.
I have found this archived topic on CN
It doesn't say what program, and my coding skills are zero.
Also a method mentioned in a topic, from S&T August 1974, A 12 1/2" Newt-Cass by Wilfred J. Sheehan. The method is described using a drill press to make the markings. I do not fully understand how it is done, also due to language skills shortcomings.
Perhaps someone have a vectorised file to share or a simple method to make it in Indesign or Photoshop. I do not know how to operate Illustrator unfortunately.
A worry is to be precise when making the strip go full circle and then attach the ends to each other, without any gaps or overlaps. If members think that is nearly impossible and the press drill method is superior, I will appreciate advice on an easier explanation of the method.