Development of a new wax thread extruder machine to enhance productivity and reduce muscular strain in the Dhokra handicraft process: an unorganised sector in Indian handicraft industry.

Abstract

Wax Thread Extraction Process (WTEP) is a key step in Dhokra manufacturing. The traditional method involves awkward postures, muscle strain and a tedious workflow. This study focused on improving the WTEP to minimize ergonomic risks and boost production efficiency. This study focused on improving the traditional method of WTEP to reduce ergonomics risk and increase production. In the first phase, the ergonomics study of traditional WTEP of Dhokra handicrafts was evaluated. Based on the findings, a new proposed wax thread extruder machine (WTEM) was considered with anthropometric body dimensions. In the second phase, new WTEM prototype was developed and tested against an anthropometric grid board. Finally, in the third phase, comparative study of the WTEM was conducted to determine the productivity and effectiveness of the new machine. The new WTEM, featuring a scissor jack mechanism and an integrated heating chamber, minimises physical effort, enhances efficiency, and the design aligns with Indian anthropometric principles to reduce postural strain. This design reduces MSDs and boosts productivity with long working hours.