I don't know what you mean by cloning machine....is this a proprietary device?

I have an aeroponic set-up and can clone your grandmother's toenails :^) and I think this is true generally for hydroponic systems.

Here is a website where they are sold:

http://www.4hydroponics.com/hydroponics/aeroponics2.asp?ItemNo=Aagri

I'm sure it would work great. It seems like a waste of money though. You can easily build one cheaply from a rubbermaid tub, aquarium aerater, and net pots or styrofoam cups. You could even add a water pump attached to misters if you wanted to go all out, although that isn't necessary. Do an internet search for an "aeroponic cloner". I wouldn't shy away from sites that are primarily geared toward illegal crops. You can learn a lot from those guys, even if you plan on growing vegetables.

I built one on advice from 'those guys'. Two Sterilite tubs, some styrofoam cups, silver duct tape and an ultrasonic mist maker.

I'm thinking of adding an aquarium bubbler for more Oxygen.