To hold the centerline on the workpiece will help the device shown in the figure.
Recommend to read
WIND ROMASHKA
Water supply is an acute problem for many novice members of garden cooperatives, owners of household plots. To supply water from local sources using fuel or electric pumps it...
“ZHIGULI” — THE LAYOUT AND MODEL
Novice automodellista propose a simple model with a body made of thin stiff cardboard. Manufacture the body you need to start with drawing and cutting with the side walls of the pattern...