Originally shared by Jeffrey Byrns
The mechanical portion of my 3d printed rotator for the arrow antenna is nearly complete!
Peter, currently my own design. The main bearing came from Thingiverse. If I feel that this is successful, I will document.
I’ll be interested in seeing how it behaves in real world use. It’s one thing to print something and have it sit on your desk, quite another to run it at 8 below.
Mike, Agreed! But I won’t be outside playing with this when it is 8 below!
Incredible design, I’d love to see the files.
So it’s good enough without counterbalancing?
It sure looks interesting.
No, it needs counterbalancing. Thought it would not, but it does.
Cool project! This looks like just my kind of overkill! 
Are you using to track satellites or for FPV?
Bruce, it is for Sats. Amateur Radio Sats to be specific. The antenna I am using is a common “Arrow” Antenna designed for handheld use by amateur radio operators. I thought it would be a cool idea to mount it to a small compact rotator and let it do the work for me.
I was guessing so, but did not want to make an assumption, what are you using to drive it? btw, I am KF4KKZ
Awesome work.
No, the main bearings (two of them) are printed as one piece. I got those from Thingiverse. Everything else was made in CAD.
This is great ! I am looking for something like this to use in a small portable ground station! Great work!