thanks for the replies.

I'm looking into the CV setting. curves cut fast from a 2D drawing using Artcam, it just 3D Vcarve models that have the issue. I have sent an email to axyz to see what they say. I don't use motion control software on the pc, I'm assuming this software is on the CNC itself? and controlled using the control pad? I just save the toolpaths in Vcarve then drop them into a folder on the cnc linked by Ethernet then open using the control pad. sorry for my lack of knowledge, The company I work for manly cut 2D stuff but recently we have been getting lots more 3D work. The CNC technician left so I have stepped in.

Is .stl the best format to save the file in? they are mostly 3dm Rhino files originally. I save the .stl file with high ish detail about 0.0001 setting.

I have also contacted Vectrics and sent them the .vrc Vcarve file to see what they say.

cheers