I too have one which I use occasionally on my Clarkson, though it's a bit big for it really.
In my case it uses very little air at all; I have a small Gast diaphragm compressor, originally for keeping +ve pressure in underground cables.
It's very similar to an airbrush compressor, but I find the air flow is so low that it gets quite hot; it really needs an air bleed.
One thing I would consider is adding a small desiccator; mine is just the little plastic bowl type, to which I've added male and female airline connectors.

Enjoy the new toy, it really is a lot easier than whatever you've used before.

Since I last used it, I've completed a small portable compressor setup using a Gast flat twin, with a 10l pressure vessel and pressure regulator switch etc.
I've yet to try it on the air spindle, but I'm sure it will be well over spec for the job.
Have a look on Ebay UK only and search for
"air compressor pressure switch control valve"
Once you get above about £9.75, you will find some controllers complete with gauges, fittings and other useful bits.

Bill

Do make sure that you have an airtrap in the supply line along with filter. Dry air is the best, otherwise they can rust.