Design and Development of a Batter Mixing Machine for Khanom La to Preserve Local Wisdom and Enhance Community Sustainability

Abstract

This research aimed to design and develop a batter mixing machine for Khanom La production in order to reduce the time required for batter preparation, while preserving local wisdom and supporting sustainable community development. The designed machine consists of four main components: the machine frame, the power transmission system, the stirring unit, and the automatic timer control system. The paddle stirrer was selected because it is suitable for low-speed mixing. Open spaces were incorporated into the stirrer design to reduce batter viscosity during the mixing process. The study then compared the mixing time and mixing capacity of manual labor with those of the developed batter mixing machine based on three repeated trials. Manual mixing required an average of 40.00 minutes to mix 10 kilograms of batter, resulting in an average mixing capacity of 15.15 kilograms per hour. In contrast, the developed machine took an average of 13.33 minutes, with an average mixing capacity of 46.06 kilograms per hour. The difference in mixing capacity between manual labor and the machine was analyzed using a Independent Samples t-test at a significance level of 0.05. The results showed a p-value of 0.014, which was lower than the significance level of 0.05, indicating a significant difference between the two methods. The findings demonstrate that the batter mixing machine operated 3.04 times faster than manual labor at the 0.05 significance level, which reduced the production time of Khanom La for the community.