Printrbot Simple Z Axis tie Bar (Stabilize Z Axis on tall Bots)

I have been buying parts to upgrade my Bot and upon installing these taller (18") smooth rods for the Z Axis, I noticed a ton of wobble.

This is a simple tie bar (for lack of a better word) that helps reduce wobble. Simply print and install.

There is also a longer version. If you have the extra bar space available I would recommend this one.