Thanks for the response. I’ll try to explain better.

I want to have a 3D view that is cropped to a specific shape. In other programs you can adjust the bounding box of the object, say the x axis, and as it passes through your model it effectively crops everything that is > than your position on the x axis while still being able to see the 3D model.

Right now, the only way I have been able to do this is by selecting a rectangular 2D ROI and pressing fast crop. This is what I want, but its laborious and I have to readjust the ROI, then recreate the stack, then readjust the levels each time I want a different area. Is there another way to crop an object?

Say you have a spherical object and you want to see what it would look like in 3D if you cut it in half. Without using the fast crop, is there any other-way of doing this with Icy?