I bought this to make a four foot wide prize wheel for a gameshow themed party. It was a bit tricky to build but once completed the wheel, made from 1/4" ply, spins about five or six revolutions pretty easily. I was a bit skeptical at first so I put a bunch of blade oil into the bearing too but that may not have been at all necessary.

I made a swivel for a 40" lcd tv. I screwed it to the top AND the bottom piece of wood attaching it to the bottom piece of wood, then by lining up holes through the bottom that were big enough to get a screwdriver through to attach it to the top piece of wood. Someone was just going to throw away a piece of 3/4 inch plywood so no money spent there. Anyone building stuff please always just check your neighborhood since people waste so much or check Freecycle or Craiglist or a place like Building Value (they salvage everything from demolished buildings and then sell it and the money goes to help people, so it's good in all ways).
If you make a tv swivel or for anything else make sure it's sturdy and/or has supports of some sort. I have a wire attached to the back of the tv running up to the ceiling, some people may not want that but I care more about being safe than caring what people think.
I have it for a monitor for my music recording programs in the computer and studio, then can swivel it around and watch tv or have it there facing the other way for singers or musicians to follow what they are adding to a song.

Peace.

I am an artist and I made a sculpture that needed to rotate in the wind. I searched boating chair swivels, bar stool swivels, but they were just not free moving enough. I read some other comments about how this one was quick to spin. This was perfect. I purchased two, one from here and one from another seller, just in case this one didn't work. This is the one I used. My only concern now, is the metal is not rust proof. I guess not many Lazy Susan's run into water hazards. So this not an outside item but with a little rustoleum, you can make it work fine. It holds plenty of weight (mine is holding 25lbs) and still functions level and smooth. Excellent for the price. Wish I would have found this first. I'll be back!

I build Lazy Susans, usually out of wood, but have now started making them out of 1/2 in granite squares 12x12 or 16x16. I also build turntables for large flat screen TV's. When choosing the size of the lazy susan give some consideration to weight. I use the 6" mechanisms for the heavier objects to be placed on turntable. They work great. With the lighter wood turntables I use the 3", but build a base for them to sit. I have built about 25 of them, and I always add a little grease, or light weight oil to the bearings before I screw in the bearings.

Bought these to refurbish bar stools that were near death. The design and construction of the original turntable mechanisms in the barstools were quite different compared to these new ones. The originals were made of much heavier gauge steel, taller, with bigger ball bearings, but which had used rubber gaskets that had disintegrated due to age. I decided to use these new turntables to rebuild the barstools instead of buying new replacement barstools, a huge savings if successful. I also bought vinyl coverings here at Amazon to re-upholster the worn seat coverings. The project took quite a bit of work, I'd say it was an intermediate to moderately difficult DIY project. The most difficult parts of the project were (1) the re-upholstering and (2) centering one of the two faces of the turntables onto the bottom of the re-upholstered seats and the other onto the wood stool's support structure. I also decided to re-upholster over the original old, worn covering rather than removing it, as that would entail too much difficult work of removing the numerous old staples and perhaps unraveling all the old cushioning materials within the seats. Along with the much thinner construction of these new turntables, this required more clearance between the re-upholstered, revolving seat and the bottom structure of the stool, so I had to prepare square pieces of plywood to add the necessary clearance.

The new turntables were rated at up to 500-lb capacity - a bit hard to believe, but, since most adults weigh under 200 lbs anyway, I anticipate the rebuilt barstools should last at least as long as the originals (11 years). All in all, the finished project was well worth the work and effort, especially since I spent less than $60 to rebuild four revolving barstools, which, if replaced new, would have cost any where from $500 to $800 or more.