Originally posted by Rick Murchison
Do it.
Log your time you spend filling at what it's worth.
I'm sure you'll rebuild your own filters, but don't forget your time.
On my little compressor (which I got for a very good price, by the way) direct costs *without* counting my time or depreciating the value of the compressor (IOW fuel, oil, compressor oil, filters, routine maintenance and repairs - I don't do that work myself as my time is better spent elsewhere) run between $20 and $25 per fill. If I used it a lot more I could probably drive that down some, but due to the expense and the fill rate I only use it at remote sites. Bottom line - it is far, far cheaper for me to buy air than to pump my own. And I think that if you actually *do it* you'll find your theoretical calculations are a bit shy of reality.
Rick