Automating seam welding can be a difficult application to tackle. The integrity of the seam ultimately underscores the quality of the final product. Gocator 3D smart sensors can be set up to report to the welding controller, which will make it possible to use optimal welding parameters such as welding speed and arc voltage based on the actual measured seam gap. This results in high quality welds even if the mechanical tolerances of the work piece and its positioning are not perfect.