Originally posted by Falott 1) first of all - allways make sure you have no nonmanifold geomtry where you want to apply a boolean operation onto. use your scripteditor a lot. SE tells you most times which vertices to select (coz when they cause non-manifoldness). What do you mean exactly by nonmanifold geometry? I checked my SE and all it says is: // Error: Cannot perform boolean operation // Originally posted by colorado best advice i can give is do not use booleans.you will do twice as much work to fix it after.its not worth it.youl be a better modeler for it.dont rely on shortcuts. Then what do I do? Originally posted by Falott dont know the tutorial Jr.Who is working on HereÕs the link: https://www.simplymaya.com/movie_page...html?tut_id=90