This machine is to punching the holes (or a small line ) on the joints between the joints of lamp cap and plastic cover in order to tight it strongly .
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Dual Shield Flux Core Welding uses a flux core wire along with a shielding gas…usually either 75/25 (c25) argon/co2 or straight Co2. For this video, I used C25 gas and .045″ (1.1mm) Boehler E71t-1 wire