Boolean commands are where volume modeling really starts to make sense in Rhino. Once you have solid volumes, you can stop just placing objects next to each other — and start working with them. Boolean operations let you combine, cut, and shape forms in a very direct and intuitive way. Boolean Union merges multiple volumes into one solid mass. Perfect for growing forms, stacking elements, or testing proportions quickly. Boolean Difference subtracts one volume from another. This is your go-to too