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Instagram: carlitos_scls We start by polishing the tube and cleaning it so that we get a better weld. We put a purge hose so that we can put argon inside the tube so that we get a clean and shiny penetration. We bridge the tube with the purge already open so that we don't have any contaminated points inside. Once we have the tube bridged and in position, we start from below and it is super important to understand the fusion bath when we start to have a good penetration. If we don't understand the fusion bath well when we start and it doesn't penetrate us at the beginning, even if we weld the entire tube, it won't have penetration. Always keep an eye on the purge because if you're careless and the purge isn't open properly, the tube will be contaminated inside. It is super important when making the joints to always start about 10 mm further back from where we finished the previous bead. Lots of encouragement to all those people who are starting out and keep practicing and every day we will get better.