> In order of learning curve and features ( for Windows , OS X and Linux ) > easy=97 Inkscape , FreeCAD > middling - OpenSCAD > harder - Blender The only one I'd heard of beforehand was Blender, which he advised me not to tackle head-on I'll have a go with Inkscape then Joe=20 ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4744 / Virus Database: 3986/7995 - Release Date: 08/06/14 --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .