Funbot Y-Carriage & Z-carriage 8mm with bearing clamps

update 28-04-2016: added the Z axis carriage with the same clamping method of the y carriage.

Changed the way the bearings are fixed to the carriage for a more secure mounting without using zipties.

The clamps use the default 4 screw holes used to fix the bed to the carriage plus a couple more.

I still have to print the whole carriage but i've printed some test pieces to check the tolerances, if you want to print the test pieces too before going for this one you can find them under the