The position of the welding roll (WR) has an influence on the overlap at the beginning and at the end.
WR slightly too high | = Overlap at the beginning less |
WR slightly too low | = Overlap at the beginning constant |
WR higher | = Overlap at the end better |
WR lower | = Overlap at the end less |
WR lower | = Overlap at the beginning less |
If you still couldn’t resolve the problem, read more at: I have problems to keep a constant overlap