openscad says the Top level is a 'Simple' object. And shapeways didn't complain about holes. Hmm... PolySets in cache: 0 PolySet cache size in bytes: 0 CGAL Polyhedrons in cache: 442 CGAL cache size in bytes: 21300608 Top level object is a 3D object: Simple: yes Vertices: 978 Halfedges: 3056 Edges: 1528 Halffacets: 1168 Facets: 584 Volumes: 2 Total rendering time: 0 hours, 0 minutes, 20 seconds Rendering finished. On 01/30/2015 08:47 PM, MichaelAtOz wrote: > and Netfabb says the stl has holes > > <http://forum.openscad.org/file/n11350/octo3_holes.jpg> > > > > ----- > 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. This work is published globally via the internet. :) 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/ > -- > View this message in context: http://forum.openscad.org/Fwd-Help-us-resolve-issues-with-models-in-order-882138-tp11348p11350.html > Sent from the OpenSCAD mailing list archive at Nabble.com. > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org