Ultimaker X,Y Blocks Featuring Quick Removal of Gantry

I have developed this bearing block especially for my Larger Ultimaker.
It features a quick way of removing the gantry by simply removing 2 Cap head screws on each block.
On the underside it has a belt clamp which is in two parts as I have open ended belts.

I have added a few removable pieces on the main block due to overhang while printing.
I would recommend printing with Brim

BOM:-
6 off M3 Hexagon nuts
4 off M3 x 8 Hexagon Socket Head Cap Screw
2 off M3 x 20 Hexagon Socket Head Cap Screw
1 off linear Bearing RJZM-01-08.

The Linear bearing is made from IGUS and can be found here http://www.igus.co.uk/wpck/2292/drylin_r_rjum_01?C=GB&L=en
All my rods are 8mm diameter.

I have added the .ipt's and .iam in case anybody wants to modify it.