Quote:
Originally Posted by JimB_again
I have just purchased the 6.5 upgrade and I cant get the "Knife" tool to work either,please can someone shed some light on this problem?
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Yes, by now I've figured it out and find the knife very useful.
1) Make a rectangle that intersects your model where you want to split it. Leave it marked as the selected object.
2) Select "knife", define the rectangle as being the knife and check / tick all of the other boxes but do not execute the operation yet.
3) Now comes the less intuitive point -- select the object you want to cut rather than the rectangle! Then execute the knife operation. When I got "knife cannot cut itself" I failed to switch the object selection from rectangle (knife) to the model to be cut prior to the final operation.