# Eccentric rotation centre point

## Open edges

When the workpiece is not clamped centrally, it results in an offset between the workpiece centre point and the rotation centre. This offset can be additionally specified when it is selected.

Defining an open L profile with rotation centre point offset

Syntax to select open profiled tube machining with offset of rotation centre point:

#CYL [ EDGES=.. … CLOSE=.. [ HOR_OFFSET=.. VERT_OFFSET=.. ] ]

EDGES=.. ... CLOSE=.. | Syntax of profile description
HOR_OFFSET=.. | Offset of the workpiece centre point in horizontal direction (Y here) towards the actual rotation centre point in [mm, inch].
VERT_OFFSET=.. | Offset of the workpiece centre point in vertical direction (Y here) towards the actual rotation centre point in [mm, inch].