Marks and scratches caused by the clamp rails
NOTE:
A minimum of marks will always be left on the canbody, because the CM21 is a semiautomatic welding machine with a clamping system.
But you can minimize the marks on the canbody, we can show you how.
Loose all four allan screws.
Use a screwdriver to adjust the nose/head piece through the eccentric, then retighten all screws.
