To hold the centerline on the workpiece will help the device shown in the figure.
Recommend to read
COSMETICS WALL
Each house master knows that to make furniture — that's half the battle. Another important and time-consuming stage — finish. Neglecting it can ruin any, even the most modern and...
PLATE WITH TEETH
In the journal "modelist-Konstruktor" was published an article by a teacher from the city of Severodvinsk Vladimir Arkhipov, dedicated to the manufacture of plastic fine-grained...