1. A welding training system comprising: a display configured to show welding features related to a training welding operation; a training workpiece comprising a substantially transparent weld joint configured to be placed adjacent to the display during the training welding operation; a processing device coupled to the display and configured to provide welding data relating to the training welding operation to the display; and a training torch comprising an optical sensor, wherein the training torch is coupled to the processing device and configured to provide the processing device with data from the optical sensor corresponding to a position of the training torch relative to the training workpiece.