Printed variable size Y Carriage

The default model of complete carriage use old sizes which is still using. But you could create variable length or weight carriage.

There could be used two variants:

### 3 x LMU8 with middle part

That is original usage in Prusa printers with three LMU8 bearings. Than you need to use middle part which is plugged in between two corners on one side.

### 4 x LMU8

Some printers use carriage with four LMU8 bearings, two on both sides. When you can do that, you don't need middle part, but you need two nuts to fix the corners on its position.

### Additional components

* 2 x 146mm M6 threaded rods
* 2 x 215mm M6 threaded rods
* 18 x M6 Nuts where middle part is used, or 20 if not.
* 3 x M3 x 20 bolts
* 2 x M3 x 15 bolts
* 5 x M3 nuts
* some stripping tapes to fix bearings

When you use longer rods, you can complete longer or wider carriage for another (larger) beds.

*Updated 6. Feb. 2019*
Idler have parametric length now, and have cover for easier mount to carr