That makes perfect sense to me, I was going to do a similar thing with the head. Use a 3" lazy susan bearing. 3" is the smallest I could find. But I never thought about using a swivel pipe connector. No ideas off the top of my head, but I'll think about it.

Thanks, bret.tallent, please do. Would love to hear what you come up with. I'll have to hit the two home improvement stores and look for things that might work well. I was also thinking of using plastic pipes that have a screw connection on the ends, but not so sure how freely that would turn compared to a swivel connector. Might a shop vac/vacuum or pool hose swivel connector work as well?

Yes, I discovered the same thing about the 3" lazy susan bearings being the smallest easily found. I am going to use one for my bot's neck too. Might I ask where you found your bearing? Is it square or round?

It's square and I found it on ebay for 4.00 free shipping. http://www.ebay.com/itm/120407553836?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 Please let me know what else you find and I will do the same. I was looking at the omnibot shoulder again and thought if I drilled out the center of the shoulder that is in the body so I could see the entire shaft of the shoulder that comes through that housing I might be able to use a pvc cap on the arm shaft to sandwich the body between the two parts. Drill a hole in the center of that cap so the center shaft with the screw hole in it protrudes and connect your servo to that. Does that make sense? If not, I will try to make a diagram and upload it.

Thanks for the info. I'll let you know if I find anything, bret. Personally, I'd like to get something like a small round Rockler lazy susan bearing or maybe a TV stand low-profile swivel. I'll let you know if I find anything I like better.

Hmmm.... I think I get what you're saying about the shoulder/arm mount, but a diagram might help in this instance. A picture's worth a thousand words, you know!