One of the first things I did when laying out my small shop was to get the dust collector outside the work area into a lean to I added behind the shop. I had hoped to make it larger to add some sheet good storage but it’s just not in the cards due to the size of the main shop and required pitch for the roof.
Fast forward to the shop being done, the starting of projects, the use of compressed air and, use of a compressor. So much for lack of noise.. . So in looking at different ways to run air lines and the cost I found copper the best since I already had many of the fitting I needed. For the most part it went smoothly. I decided to add 2 drops along the same wall.
I ran 3/4” in pipe from the lean to and dropped down to 1/2 or the two drops. Since I had needed to add 220 to the back area I just ran the copper pip next to it. Wall space is tight so I did my best to keep things as close as possible.
Each drop has it’s own bleeder and cut off so if I need to change things out I won’t lose all the pressure.
The drop in the lean too uses a short leader hose to suck up any vibration.