The standard orentaion is wrong ... the use of ambugious terms like width which should be X instead is y ... and length is used for X it should be y. Sorry to say this is not a professional engineering platform or any other. Please lets have a discussion about this.. the standard view 3/4 is also wrong ... 0,0,0 should be at the lower left hand of the frount face... Its arguable everything is ... however the view should be from the objects point of view not a god/creater view when you work on the left hand side of the object its the left hand side of the object the not god's left hand side... Thus in the program you have the left side of the object the left side of god and the right side of the object being the right side of god. I am classically trained and worked in aerospace eng. ... Computer Vision, AutoCAD, Have done a lot of "CAD" programing... Rhino makes the same mistake.. POVRAY uses the left hand rule with Yup.... at least FreeCAD is correct in using the right hand rule Zup ... because of the mix up with X pointing out of the screen the standard reference lighting is comming from over the left hand shoulder and it should be the right hand shoulder... all of this is easy to fix.... IF fixed I have an open source CAD text book that could be used for FreeCAD training ... I also own the GNUCAD name... and would be willing to work with you... I have access to Volumetric Cad modules that could be intergrated... sorry for bad grammer or misspellings.. don't have the time to clean this up... carl at Common Good Public License dot org..
Promising. But at this point on my Mac only promising. As the old adage said: "If it sounds too good to be true, that in fact is probably the case!" Best of Luck.
FreeCAD has great promise, but it's young and very much a work in progress as yet. I like its user interface and much about the capabilities so far - though it has a few odities and bugs still. However!!! As at August 2015 it allows you to design a single homogeneous part (e.g. a moulding) as a unit. But most real things require an Assembly of parts (e.g. mouldingS + screws + bearings, etc..) - and that's not there yet - which rather scuppers any serious use yet. You can of course design many parts and even place many components on the same drawing. But that's not the same as being able to assemble individual parts into a component/product/composite-part. I know there are some good intentions and good features in the pipeline, like the Assembly module and true Parametric driven* design capability. Providing these are well thought out and well implemented, they'll make it a great product with much potential. [ * FreeCAD at present allows specification of the values of attributes (eg. length, width, height etc.). These can be changed (edited) and redrawing happens. However, to me true parametric driven CAD is being able to use formulae and variables in the attribute definitions, so that changing a value ripples the effect through the whole model, not just one item. ]