For some reason I cannot sketch on a surface. I've tried many different flat surfaces on a part and still can't sketch on a surface. This started happening after I loaded ACLT 2005. Could that be related?
I tend to believe I'm just doing something really stupid..... Why can't I sketch on a flat surface?
Is this an imported part? Is it a solid? Could these surfaces be conical? Try inserting a referenc plan using three points on the surface (verticies).
Can you post an example file at
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