Michael Koblic wrote:
I find the need for a small jet of compressed air to blow out chips etc from
time to time. I am thus looking for a source of compressed air to which some
sort of air gun can be attached. It has to satisfy three requirements:
1) It has to be cheap,
2) It has to take up little or no space,
3) It has to be cheap,

Any suggestions?

If all you want is to blow out chips, how about a fireplace bellows.
They work pretty well as I remember. they are not expensive either.

BobH