First observe the surface to notice that it goes to or beyond the solid. Think of a knife that is cutting cheese. If the knife does not go all the way through the cheese you must break the cheese in order to have a piece. In this case Creo cut using a surface will fail. The operation is 'Solidify' to add & cut using surfaces. Notice there are three options underneath the solidify function. Pre select your surface to make the cut with then hit solidify. You may be in Aisia, however for your information Design-engine has a surfacing week long intensive the last full week of each month in our Chicago Westloop studio. We also have developed a training delivery system that you can use remotely.
