In this video, I walk you through the entire build process from start to finish: Designing a simple overhead cable arm Dumpster diving at work to find 3/4-inch conduit for the main support Cutting, fitting, and welding the arm to the plasma table Mounting the system securely. In this video, I walk you through the entire build process from start to finish: Designing a simple overhead cable arm Dumpster diving at work to find 3/4-inch conduit for the main support Cutting, fitting, and welding the arm to the plasma table Mounting the system securely. In this episode of ArcDroid Adventures, I build a custom cable management arm for my water plasma table so I don't have to stand there holding the torch cable while the ArcDroid is cutting. more In this episode of ArcDroid Adventures, I build a custom cable management. However, I find that cable ties bind when you want to remove, replace or add a cable—and, apart from expensive trunking, the other cable-tidy gadgets I've seen look just as cumbersome or fiddly to use. For the Top Beam, a 4x4 is actually “better,” in that a 4x4 will bow a little less, and will require less work for you since you will not have to glue and lag-screw two boards together. The video's design utilized 2x4s only because I wanted to keep costs. The bends, tees, crosses, risers and reducers of wire mesh cable tray can be easily and quickly made live at the project by using a bolt cutter. Since the jaws of the bolt cutter drags a layer of zinc across the cut end and forms a protective layer. Resist fire, rot, and insect damage at tangent or deadend locations with Hubbell's Fiberglass Crossarms.