So I got 1/4" threaded rods for my z-axis, the only problem I’m having now it finding something like this:

13087489_1248551685162906_4981941779099033508_n.jpg

The threaded adapter in the middle needs to be 1/4" and there needs to be at least one more hole on each side for support.

Where could I find something like this?

Hi! They appear to be aluminum. You can easily buy some square bar and drill them yourself.