<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi there,<div class=""><br class=""></div><div class="">I am having some difficulty meshing up a truncated sphere geometry. Google is telling me a lot about an old feature “ruled surface” that worked in the past, and I believe that “surface filling” might be the replacement, but I’m really struggling to get a sensible result. I have attached some pictures of my geometry frame, and I would like to have a 3D mesh of this shape. I am generating this through pygmsh, but do not know how to proceed with defining the surfaces, in particular the curved surfaces, and hence the volume. </div><div class=""><br class=""></div><div class="">I would be so grateful if someone could advise me how to do this.</div><div class=""><br class=""></div><div class="">Many thanks,</div><div class="">Caoimhe </div><div class=""><br class=""></div><div class=""><img apple-inline="yes" id="9ACC9128-1EC4-4FBA-ABDB-7E8E3F16FC14" class="" width="657" height="659" src="cid:A63ECAC5-329B-464E-B46B-4667A8EE200E@maths.ox.ac.uk"><span class="Apple-tab-span" style="white-space: pre;"> </span><img apple-inline="yes" id="26A5D5B0-38FF-403B-AA51-0D830F93AA35" class="" width="599" height="686" src="cid:6722086F-C535-4B06-8DE6-AEE221CB1CB7@maths.ox.ac.uk"><img apple-inline="yes" id="8211B795-97CE-4B27-824E-28B1F20ED6E2" class="" width="587" height="688" src="cid:C086902C-6EAC-4CFD-9499-1173DA85BF82@maths.ox.ac.uk"></div></body></html>