ABSTRACT Friction Stir Welding (FSW) is a machine used for solid-state welding for joining materials, especially dissimilar materials. Friction stir welding can be used for welding thermoplastic materials, one of which is High-Density Polyethylene (HDPE). So it is necessary to make a strong frame to withstand all the friction of the stir welding machine components. The Analytical Hirerachy Pro…