wrote:
I believe there is an article in the recent Soaring magazine about
building one. But Wal-mart ( good 'ole walmart) or Home depot sells
fully portable units that hold a half dozen gal. or so at 100 plus
pressure at a very resonable price. Hope that helps.

Yup. I picked up one (a 5 gallon unit) today at a local Ace Hardware
for just over $20. There are larger tanks available (9, 11, ...) but 5
at 75-100psi is likely more than sufficient for anything I'll need to do.

Jeremy