Z Threaded rods ball bearing guide

I recently changed the 30mm standard (and bent) threaded rods with better quality (and straight), but 40cm instead.
So, i designed this add-on for my z axis top bracket (http://www.thingiverse.com/thing:1637438) to guide the rods, and with the added ball bearing to minimizing friction.
If you are using 30cm rods, i also made an adapter, just attach it firmly with a cable ties on your rods.


The ADAPTOR need RAFT due to really small base, print it with the open end up.
The GUIDE need SUPPO