I have a simple rounded edge prism. I created a circle to use as the "knife" because I want to cut 2 holes through the prism.
I first select the circle, then select the prism, go into ortho view, click tools -> knife project, to cut it:
Nothing happens after cutting it except making an extra edge in the shape of a circle:
What am I doing wrong? Why is nothing getting but? What do I need to do to cut THROUGH the cube?