Manual, semi-conventional, and conventional weed eradication are the three forms of weed eradication utilized. Farmers benefit greatly from the usage of weeding equipment in combating pests in the fields. The blade you use determines how successful you are at weeding. As a result, it is required to examine the weeding weeds blade. With a tetrahedral mesh, simulation utilizing the finite element analysis approach allows for the optimization of design, computation, and prediction of material strength. The goal of this research was to figure out how much von Mises's stress, deformation, and safety factor were worth. ANSYS Workbench software was used to simulate various loadings of 10N, 25N, and 50N. The highest von Mises stress created by simulation of modelling weed blades at 10N, 25N, and 50N loads is around 2.95x10-2 MPa, 7.38x10-2 MPa, and 0.14755 MPa, respectively. Each of the safety factors is 15, and the maximum deformation value is 4.26x10-7mm; 1.06x10-6mm; 2.13x10-6mm. The safety factor indicates that the weed weeding knife design is safe to use up to 50N loading.

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The Djawadi blacksmiths are one of the groups of blacksmith craftsmen who are still productive and surviving amidst the youth's declining interest in continuing the business, which is the local wisdom of Gilangharjo Village. The priority problem currently being experienced by Djawadi blacksmiths is in the field of production. The forging work process at Djawadi blacksmith still uses simple equipment and has yet to apply science and technology or appropriate technology. The furnace is now made from concrete with an open design, making the combustion process less effective and causing air pollution. The aim of this activity is the modernization of environmentally friendly stoves. The method is carried out by designing a furnace with a closed system and considering ergonomic aspects. The results of the activity are the dissemination of environmentally friendly furnaces with a dust filtration system equipped with centrifugal fans and blowers.