It doesn't matter whether they are touching or not, they will still be unioned. The program is within an implicit union(). What you want to do is to simply render one part at a time (comment out the code that renders the other parts). -- View this message in context: http://forum.openscad.org/Lazy-union-any-way-to-do-in-OpenScad-tp18541p18546.html Sent from the OpenSCAD mailing list archive at Nabble.com.