just ran a black pipe gas line for my dryer last year, and couldn't believe how much I spent on pipe/fittings.

this summer I just upgraded my air compressor so the news about copper is interesting. wouldn't even consider pvc

sure like those hose reels too.

picked up a butt ugly big blue Harbor Freight regulator/filter for $30 (confessional time)
and see devilbliss sells the same one painted orange in the Eastwood Catalog for $130- same one I swear!

for that first flexible run from the compressor to the wall:
flex gas dryer line?
or should I just use hose?