First I went to a pet shop and picked up 4 of the air valves and some air hose used for aquqriums then I got some plexi glass 4x4ins, take a 2in. abs connector and drill a small hole in about the middle of it,then silicone it to the plexi glass,then get some 2in.ABS about 3in long,I use a piece of brown paper bag to put on the bottom of the 2in ABS then push the piece into the connector with the brown paper on the bottom the air will travel through it .put the small valve into the hole you drilled in the connector,then hook up the hose to an aquarium pump fill the ABS about 1/4 full turn on the valve ,the paint should roll in the container,you will get the odd volcanoes so adjust the valve accordingly.I buy my paint by the pound,usually paint around 7000-8000 jigs a year.