My next project
Now that I've finally about finished the electrical rough-in in my shop, I'm ready to tackle the shop's first metalworking project - plumbing the air lines. I'd appreciate any observations about what you like and wish for in an air system, and suggestions on my plan below.
I plan to run 3/4" Type-L copper trunk line from my compressor, an 80 gallon Bel-Air model 218V two stage, about 30 linear feet to the water separator, then from there along the center of the trusses the length of the building. I'll then run 1/2" branches to outlets. The air chucks will be located as follows: one in center of ceiling for a retractable reel, one between the garage doors for air to the outside, and then at various locations above bench height. The lines will ultimately be behind drywall and each chuck will have a ball valve shutoff and a drain valve, as will the outlet from the compressor. I'm a little concerned about the length each assembly will protrude from the wall with both a shutoff and drain along with the air chuck. I will attempt to maintain 1/4" per foot fall in the horizontal lines.
I expect to use a sandblast cabinet and sanders, along with various air wrenches, etc. for automotive projects and whatever else comes along. I may shoot some primer, but don't anticipate doing any finish painting.