Quote Originally Posted by Andrew C View Post
It was a 7mm slot with semi circles at both ends, it was the same tools. I set the xyz between runs and the software is v carve pro. The material was screwde to the waste board. I will have to check if the waste board moved maybe.
Highly likely you moved either x or y zero then.? Other less likely things could be

#1 Cam cockup
#2 Tool offset applied
#3 Material moved
#4 Tool offset applied
#5 Lost steps