Looks like i can forget about using this at all.
I just tried connecting up the can of air, and i cant seem to stop air pissing out the regulator attached to the can, i've tried everything, checked the o-rings, tightened it as much as possible, tried it looser, but still air leaks out somewhere from the regulator adaptor thing
i cant pinpoint if its from the screw which turns the air on, or from where it screws onto the can.
So at best, i can get air coming out the air brush when i squeeze the trigger with a little leaking from the regulator, but when i release the trigger it all pisses out the adaptor on the can
I'll try put a strip of masking tape around the top part of the screw on the regulator to give it a tighter fit, but i doubt it'll make much difference.
Back to a brush for me