To hold the centerline on the workpiece will help the device shown in the figure.
Recommend to read
BOAT ON THE WINGS
The speed of fast motor vessels — boats, scooters and even simple boats — are growing. This is logical not only in sports but also in everyday operation of such ships, because the...
GRINDING IN THE “BATH”
An ingenious solution processing grinding wheel internal surface of tubes or hollow parts offered innovators N. Epifanov, A. Chuprikov, Y. Shabalin. To create abrasive for the...