Hidden line snapping

 From:  Gianrico
1471.7 In reply to 1471.6 
The best way for 3d snapping IMHO is the use of working planes instead of layers.
If I can snap only on selected faces it will be more simple to snap correctly, simulating the use of planes.
Snappin in the 'volume' is quite difficult and may be better to snap using the ortho views and passing from one to another (with LMB on).