You got it almost right: linear_extrude(height = 300, twist = -360) translate([0, 10, 0]) circle(r = 1); You don't want to center, since a centered linear extrude centers the entire resulting 3D object in the origin. Apart from that, you only got the X and Y of the initial translation mixed up, and the twist inverted (the twist direction is not very logic I know) PS! Look up the % and # operators. They are good for debugging such things. -- View this message in context: http://forum.openscad.org/Beginner-help-tp11588p11589.html Sent from the OpenSCAD mailing list archive at Nabble.com.