Here is a basic CG balancer I designed. I wanted one that would work for Micros,all the way up to 60 inch planes. I felt it should be off of the bench a bit so tools and suplies could easily be under the plane, for easy reach, while balancing. I used 6mm arrow shafts I had lying around. But you should be able to pick up the same ones from wall mart.

No supports necessary Just rotate the Main body in your slicer so the holes are down and print it upside down. The legs are less than 45degrees off level so they print just fine.The Buttons and adapters print just as easily. I originally planned on using some smaller rod I had, but liked the arrow shaft better thus the "adapters"

In the photos you can see an extra set of adapters I printed, they are superfluous. I also just press-fit everything no glue, gravity does just fine.