Hi Alex,

I have absolutelly same experiences regarding metal sheets manufaturing - STEP file + dimension drawing with tolerances as a primary data sources for manufacturing, then it is chosen adequate bending tool for CNC machine, because for example holes near to bending radius, thickness and density of metal sheet material can affect choosing of right tool to avoid any unwanted deformation. Based on these information Autopol does the correction of flatten shape dimension during unfolding.

...therefore I stopped attempt unfold metal sheets parts inside MoI :-)

Mik