Modular Y Carriage V2

The second version of Modular Y carriage. this time the carriage and screw holes are modeled based on the pcb dimension spec found from here http://reprap.org/wiki/PCB_Heatbed

The corners are now symmetrical and there's only one type of corner to be printed multiple times. Also all of the models/objects are less than 130mm and can be printed by most 3d printer bed size. Most carriage designed by others requires big print and not to mention that some users don't prefer to print something big in one shot (I'm one of em)

Multiple beam lengths are also included to cater other pcb sizes; 200 x 200, 300 x 200 and 300 x 300

The corners also features nut trap hole to enable you guys to adjust the bed with just single hand only without any additional add-on to trap the nut in place.

The adapter screw holes are made to be used with the y belt holder found in BOM section down below.

Do check out the V3 too over here - http://www.thingiverse.com/thing:1345816

#Important
Only p