Hello, I am an avid-cyclist. I have a maruishi road racing bicycle. I started fixing/upgrading bicycles 6 months ago. I can build a bike from a scratch with used parts. One thing I can't do is restore the bike I build with used parts. I usually just spray-can the bike frames when there's rust and chipped paint. I can't really do much with that. Now my question is, how much power of air compressor would I need? in terms of PSI, CFM, Volume, I know HP are not accurate... to sandblast/powder coat these bike frames and other small bike parts to restore it. I may eventually get into restoring some car parts for a hobby, especially my rotting honda, such as the hood? I am looking to save money as possible, so please if anyone can suggest me what air compressor would be the right for my activities. Thank you!