I bought this after struggling to keep my round embroidery hoop tight enough. It was easy to put together, less than 5 minutes, I think.
I loved how the clamps have a groove to keep them from slipping, so when my fabric looked like it was drooping, just a quick turn of the dowel tightened it up perfectly.
I did see someone had mentioned the roughness of the wood, and I do notice it a little as well, but not even enough to make me want to stop my project to do anything about it.