Let me collect a few options on how to make a round stick, otherwise I have to constantly look for it and remember where I saw it. At one time, when I had not yet gotten to the topic, I cut off as many corners as I could with a milling cutter and then used a grinding wheel to finish it into something similar to a cylindrical shape. Then I did it with a die, but there was a lot of sanding after it, if you need it smooth. Therefore, this option from Anatolii TTJ is most interesting for sticks that are used in visible parts of products. Industrial manufacturing methods are not involved here, if anything
