I wrote a cylindrical extrude module a while ago and thought that it might be useful to others. I have placed the scad files in the OpenSCAD folder on my Microsoft OneDrive cloud server: https://onedrive.live.com/redir?resid=625391B4CF1D545D!115&authkey=!AHZ3rqfLOct19dU&ithint=folder%2c If you are interested start by watching the demonstration video (CylindricalExtrudeDemo.mp4) to get an idea of what it does, then try the examples in CylindricalExtrude_examples.scad . Cheers, Trygon <http://forum.openscad.org/file/n17291/CylindricalExtrude03.png> -- View this message in context: http://forum.openscad.org/Cylindrical-Extrude-tp17291.html Sent from the OpenSCAD mailing list archive at Nabble.com.

If you were wondering about the use of constant $fe and function fa(r) please see this forum topic: http://forum.openscad.org/fe-Tolerance-based-arc-approximation-tp14212.html -Trygon -- View this message in context: http://forum.openscad.org/Cylindrical-Extrude-tp17291p17296.html Sent from the OpenSCAD mailing list archive at Nabble.com.