Comparative Study of Welding Material Elasticity with the SMAW Process for 2G Positions Between Before and After Using Welding Machines with Augmented Reality Technology oleh Arief Syarifuddin, Erdina Arianti, Kusnindar Priohutomo, Rosi Dwi Yulfani, Berlian Arswendo Adietya, Aurista Miftahatul Ilmah, Taufan Prasetyo