Newbie looking at 6040 (China CNC) for polypropylene 15mm sheet

[Zeeflyboy]

A mister unit will usually have two feeds going into it, an air line and a coolant line, and will have needle valves on both to vary the mix. They are generally designed to work on venturi but you are better off providing a pressurised coolant flow to them - you'll get bigger droplets rather than a pervasive fog.

I see yours looks to have a hose in the back for coolant but I see no second valve for controlling the flow, only a single valve which I assume is controlling the air flow.

this is the type I'm using http://www.ebay.co.uk/itm/Mist-Coola...8AAOSwUuFWzUwK