<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><br class=""><br class=""><blockquote type="cite" class="">On 27 Nov 2018, at 11:17, Alessandro Vicini <<a href="mailto:alessandro.vicini@sitael.com" class="">alessandro.vicini@sitael.com</a>> wrote:<br class=""><br class=""><br class="">Considering the attached geo file, why there is no surface generated by the extrusion? Thank you.<br class=""></blockquote><div class=""><br class=""></div><div class="">The built-in CAD engine is quite limited for the extrusion of curves: it will not create surfaces if the origin and the destination curve are the only ones bounding the resulting surface.</div><div class=""><br class=""></div><div class="">You can use SetFactory("OpenCASCADE"); for such geometries:</div><div class=""><br class=""></div><div class=""><img apple-inline="yes" id="0D135B25-59E6-464A-9E79-C878E1F9B2CC" src="cid:82A1E707-F8AF-4EFC-B40D-BA4BD76D62E7@ulg.ac.be" class=""></div><br class=""><br class=""><blockquote type="cite" class=""><br class="">Regards,<br class=""><br class="">Alessandro<br class=""><br class=""><span id="cid:0A69A74A-98DC-43BA-AD9D-802E7707E596@ulg.ac.be"><extrude.geo></span>_______________________________________________<br class="">gmsh mailing list<br class=""><a href="mailto:gmsh@onelab.info" class="">gmsh@onelab.info</a><br class="">http://onelab.info/mailman/listinfo/gmsh<br class=""></blockquote><br class=""><div class="">— <br class="">Prof. Christophe Geuzaine<br class="">University of Liege, Electrical Engineering and Computer Science <br class=""><a href="http://www.montefiore.ulg.ac.be/~geuzaine" class="">http://www.montefiore.ulg.ac.be/~geuzaine</a><br class=""><br class="">Free software: http://gmsh.info | http://getdp.info | http://onelab.info<br class=""></div><br class=""></body></html>