Vectric Customer

I have an .stl file that I want to modify. The shape of the existing file is rectangular but I need to carve it in a triangle shape. I would like to keep the same aspect but "slice" it into a triangle. I'm using VCarve Desktop. Any ideas? thanks in advance

Actually I found that it's a .cdr file and not a .stl.

You'd be better off creating a new one.

I'm not clear on what you mean by slicing into a triangle.
Can you upload a sketch of the before and after of what you are trying to do?