Hi guys

We are trying to band a 12mm glass but at these days we have a problem.
while tool is going on the edge on operation, the tool is going away from the glass edge but it is still turning on as still bending. It doesn't see the glass as it is. Thus tool sometimes touches and sometimes doesnt on the same edge.

I use autocad to create drawings as dxf files and then intercad and winglasscam to chose the tools. What is the problem pls help me..
(group)