Custom Small Polypropylene Tank Fabrication

I’m looking for a fabricator who can build a set of small tanks from 3/8-inch thick polypropylene sheet. The tanks will be used for general liquid storage—nothing hazardous—but they must be fully watertight and built to last... (Budget: $750 - $1500 USD, Jobs: 3D CAD, AutoCAD, CAD / SolidWorks, CAD/CAM, CNC, Manufacturing, Mechanical Engineering, Solidworks)