thx in advance
O/H reply_NG Ýãñáøå: Hard to find free resources. I personally use Mechanical AutoCAD and it works great!!! Both in 2D and in 3D. It took me only 1 day to figure out how it works. I am 22, studying Mechanical Engineering.
Whenever I am looking for symbols I always look to http://cben.net/ (CAD Block Exchange Network) as my first port of call.