The most appropriate separation technique for the processing of solid metal parts with large dimensions is sawing. The cutting tools used in this machining process are exposed to very high mechanical and thermal loads, yet the highest precision, prod-uct quality and process stability must be guaranteed. With regard to process optimisa-tion, the prediction of tool failure and the estimation of the remaining useful life is an important goal. In this paper, a first approach is presented to work towards the devel-opment of a degradation model for circular saw blades based on monitored process parameters. Such a degradation model could then be used to derive the key objec-tives presented above. The basis of this analysis is the recording of the sensor signals current, voltage, vibration and sound with a high sampling rate, whereby in the pre-sent work the focus will initially be on the first two signals mentioned - current and voltage. These signals were analysed in such a way that key indicators could be de-rived. These key indicators were then used to carry out initial analyses, which are intended both to increase the understanding of the process and to form the basis for future analyses.