Good ideas. Thank you for your help. Yes, the panel will be vertical in both positions. I ended up going to our local Metal Supermarket, and the expert was able to help me size solid pipe to the correct weight. When I installed it, I added a few washers to the cable to fine tune the weight...
I am building my own counterweights to lift a 30" X 80" X 1/2" cabinet grade plywood panel. The counterweight needs to travel freely within a normal stud wall. I am thinking about using 3" iron pipe filled with Quikrete. I will utilize 1/4" vinyl coated cable with normal cable hardware and...