On Sat, 10 Jan 2015 16:19:19 +0000, Roger Mills wrote:

A mains compressor is also very good for blasting air at stuff to clean
it. But don't expect to be able to use power tools with a small mains
portable jobbie.

I've got one of the 2.5hp/25 litre "small proper" compressors that the
Aldidl twins punt out occasionally for £60-70 or so - and it'll run an
air impact rattlegun quite happily.