Hello, This message to inform that I've made a library that permits to add fillets to polygon. Very usefull when you deal with 3D printing. Olivier The lib is here: https://github.com/papyDoctor/openscad-shape25 <https://github.com/papyDoctor/openscad-shape25> <http://forum.openscad.org/file/t2837/Clipboard01.jpg> -- Sent from: http://forum.openscad.org/