A simulator system for use in simulating fabrication or construction comprises a simulation tool with a magnet mounted on a working end, a simulation workpiece comprising a substrate with an alignment location and at least one tool path indicator; and a sensor device with a corresponding alignment location and at least one magnetic sensor. When the sensor device is aligned with the simulation workpiece, the sensor device detects the moving magnetic field of the simulation tool and determines a path travelled by the tool with respect to the sensor device. The system can then determine if the path is consistent with simulation performance data, and can provide feedback accordingly. In this system, the simulation workpiece can be formed of inexpensive printed paper that is bent, curved, or folded into shape.