2" Caster mount

I have a CNC machine that I built from http://buildyourcnc.com/book.aspx. Well it was in my basement for a couple years but never really used it because; 1. debris got everywhere, and 2. it was loud!

So This weekend I brought it up into the garage where I will keep it (maybe it will get more use.)

As right now, it is sitting on the ground, and when I want to mill something, I am going to want to put it outside onto the driveway. But it's heavy!! So I ran to Walmart and found some 2" swivel