I have a relatively cheap 8 gallon compressor but still would like to
run some air supply lines including to avoid having to drag the
compressor along:
- 1 to central workbench area (20 ft)
- 1 to top of garage bulkhead (40 ft) to facilitate outdoor projects
and filling bicycle or car tires

- What piping material should I use? (copper? plastic? rubber?)
- What diameter piping would be best given length of run and size of
compressor?