<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Dear Gmsh users,<br><br>I'm rephrasing a previous question, hopefully to make it clearer what I'm after:<br><br>I have an object (given as an STL file) and which I load it into Gmsh with Merge 'obj.stl'. I then define in Gmsh a control volume ( a cuboid ) around the model. <br><br>Now, I want to mesh the volume between the cuboid and the model. How do I do that?. Also, I'd like to have a finer mesh close to the model surface and a coarser one away from it (use the `Attractor' field?). <br><br>Would appreciate help how to achieve these two.<br><br>Thanks,<br>Mike.<br></td></tr></table><br>