Thanks for mentioning onshape and their Linux support, will definitely try. In the meantime (desktop based, multi platform) FreeCAD [1]  has been great for me.<p>1) <a href="http:&#x2F;&#x2F;freecadweb.org&#x2F;" rel="nofollow">http:&#x2F;&#x2F;freecadweb.org&#x2F;</a>