Geopolymer is a new material that begins to become a phenomenon especially in the industrial sector. Based on the results of the previous study, the use of geopolymer has been widely applied in the cement and concrete sectors. This is because the ability of geopolymer can dry at ambient temperature and within a short period of time. In contrast, its machinable properties particularly concerning tool wear analysis of geopolymer have not been reported. So, this research is carried out to identify the relationship between compressive with tool wear of cutting tool, the best parameter settings of machining geopolymer material concerning tool wear and identify the most significant parameters with responding to tool wear using Taguchi method. Twenty two samples of geopolymer were prepared to undergo compressive tests and lathe operations to obtain the results. The sample is prepared with two shapes which are cube and cylinder shape. Material are mixed based on quantity that has been decided. The result obtained from this research will indicate whether fly ash geopolymer is machinable. In order to identify the best parameter combination and significant parameter that influenced machining of geopolymer, Taguchi method as optimization method is used. Taguchi The results shows that the most significant parameter that influenced machining on geopolymers are feed rate and followed by cutting speed whereas depth of cut only gives a little effect. The best combination parameter has also been suggested by the experiments. The result gathered from this research will be useful to expand the use of geopolymer in the industrial sector, especially in machining.
