To work poster pens are very convenient, and who was fine — what makes them miracles: you can always pick up the desired width of the line, replacing the pen on the right more. But each can hold only one “track”. But this small improvement allows us to obtain two parallel lines… in a single pass. For this, needle files propisyvaetsya portion of the working edge of the Pera: are formed like two pens in one.
Recommend to read
GEAR RACK ON THE LATHE
We offer you a simplified method of manufacturing a cylindrical gear rack. It can be done with a conventional tap, picking up the thread profile in accordance with your existing gear....
PIPE — ARC
Remember how in one of the Russian folk tales bear arc bent? Took two legs of the barrel at both ends and through the knee. For while it attempts, as we know, was not successful, note...
