To spend simply a circle on a plane costs nothing with the help of a compass. But what if this line should cover a cylindrical billet? For a rough layout, you can use string or a rubber ring. The marking will be more accurate if the workpiece perpendicular to lower the fluid: boundary wetting will become the desired line. Another option is to wear to the cylinder tube of suitable diameter or wrap it with a strip of paper, foil.
Recommend to read
THE KNURLING MAKES THE FILE…
In the manufacture of models or devices containing frequently unscrews detail, there is often a need to do the knurling (knurled) outer surfaces of the nuts or screw heads. With this...
THE “PATCHWORK MONARCHY” AND ITS SUCCESSORS
Speaking about the Austro-Hungarian Empire, historians experience a certain difficulty — classify or not to classify it among the great powers. On the one hand, the dual monarchy was...
