Hi, Welcome to the forum. Your posts are flagged "This post has NOT been accepted by the mailing list yet. " you need to subscribe to the mailing list too, see here <http://forum.openscad.org/mailing_list/MailingListOptions.jtp?forum=1> . ----- Newly minted 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/make-an-object-hollow-with-constant-wall-thickness-tp14255p14261.html Sent from the OpenSCAD mailing list archive at Nabble.com.

The best (fastest) way is to include the wall thickness already into MyObject(): module MyObject() { $fn=12; union() { sphere(10-Wall); translate([15,0,0]) sphere(10-Wall); cube([3-2*Wall,30-2*Wall,6-2*Wall],center=true); } } 2015-11-02 4:18 GMT+01:00 MichaelAtOz <oz.at.michael@gmail.com>: > Hi, Welcome to the forum. > > Your posts are flagged "This post has NOT been accepted by the mailing list > yet. " you need to subscribe to the mailing list too, see here > <http://forum.openscad.org/mailing_list/MailingListOptions.jtp?forum=1> . > > > > ----- > Newly minted 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/make-an-object-hollow-with-constant-wall-thickness-tp14255p14261.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 >

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It gets a little faster if you dont use a cube (cube(2*Wall,center=true);) for the minkowski(), but a 3 sided pyramid (tetrahedral), as it has less vertices. 2015-11-02 19:22 GMT+01:00 Peter Falke <stempeldergeschichte@googlemail.com> : > The best (fastest) way is to include the wall thickness already into > MyObject(): > > module MyObject() { > $fn=12; > union() { > sphere(10-Wall); > translate([15,0,0]) sphere(10-Wall); > cube([3-2*Wall,30-2*Wall,6-2*Wall],center=true); > > } > } > > 2015-11-02 4:18 GMT+01:00 MichaelAtOz <oz.at.michael@gmail.com>: > >> Hi, Welcome to the forum. >> >> Your posts are flagged "This post has NOT been accepted by the mailing >> list >> yet. " you need to subscribe to the mailing list too, see here >> <http://forum.openscad.org/mailing_list/MailingListOptions.jtp?forum=1> >> . >> >> >> >> ----- >> Newly minted 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/make-an-object-hollow-with-constant-wall-thickness-tp14255p14261.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 >> > >