Check out John's golfing simulator frame!
"I looked at buying a kit and they wanted like $1200 for it and I had to buy the conduit, the second most expensive item. So I started to look for the conduit connectors which seemed to be the only difficult to find item in their self build package. When I found maker pipe, I knew I could do it all myself. Here is the picture of the final project and a couple of steps in the build."