Hi Mike, I saw this in the Carrara 5 manual: CUT TOOL!

Create a poly line and place wher eyou want to divide the object (dont need to be inside the object, above or down works too). Click in the small arrow below the Boolean tool and select the Cut tool.

Now select the object and after that the poly line, use your "-" or "+" keys to choose your cut option, them hit enter, its done. Simple and sweet.

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