Arduino Printer Part 2

Please see part one here. 

Now that I got my new K'nex in, I've been able to expand the full printing size of the printer. I've also replaced the wire with rubber bands and hot glue that have been very crudely assembled. Hopefully I can find a better alternative to this method. (Or maybe I won't because I'm lazy ha) I purchased a power supply to power the motors since the Arduino itself is not strong enough to do it, however I used it in another project and it broke so I'm getting a new power supply shipped now. I started doing the coding but can't test without it so for now the project is on hold. 

Here is the first line I "printed." ...Something about one small step for man...