Just a suggestion.... here's a much more concise version of the main body... hull(){ translate([0,0,32])cube([16,16,.01]); translate([4,4,24])cube([8,8,8]); } hull(){ translate([0,0,0])cube([16,16,4]); translate([4,4,20])cube([8,8,8]); } translate([0,0,22])cube([16,16,4]); -- View this message in context: http://forum.openscad.org/Attempting-to-fix-my-file-manifold-issue-tp10923p10930.html Sent from the OpenSCAD mailing list archive at Nabble.com.