The controller we worked on is a remote-control device for woodworking machine tools. The controller consists of two rigid ABS shells, one front and one rear which also houses the co-molded gasket. To freeze the final shape, our customer wanted to make various prototype kits. The additive rapid prototyping technology chosen was SLA stereolithography to achieve an excellent level of precision and also an appreciable level of surface finish including painting. Thanks to the prototypes made in SLA stereolithography the customer was able to test the product and make important changes. It has optimized the assembly with the internal components and made revisions to the design to make the operator’s grip on the controller more ergonomic.