(you still need to subscribe to the mailing list) Maybe I'm not visualising this properly, but when they are union-ed it will fill the space. Or translate another projection up to whatever level in the top 3D object, hull the two projections and it will be solid. Perhaps a picture is worth a few words? ----- Admin - PM me if you need anything, or if I've done something stupid... Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. Obviously inclusion of works of previous authors is not included in the above. The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out! -- View this message in context: http://forum.openscad.org/Hulling-a-projection-tp21748p21751.html Sent from the OpenSCAD mailing list archive at Nabble.com.