This model was created for Oldcastle to demonstrate a new water drainage system. As the water flows through the pipe, vortexes are created which allow waste materials and trash to be collected at the bottom. This is a fairly complex system so LED lighting was installed to trace the water flow through the pipes. Buttons on the back allowed salesmen to guide their clients through and interesting water flow demonstration. This model draws attention to the booth and provides an attractive demonstration at all their trade shows. The model is large enough so that salesmen can point out all the features and demonstrate the ease of collecting gravel or garbage and cleaning out the system.