Using an envelope --- ie, the "thin can" --- is an accepted way of welding a lot of small bits and pieces into one piece of material. I've never used it, I dislike it because I feel it detracts from the integrity of the material. Some people like it because it makes the welding of small pieces of material easier.
The thing I cannot accept in this video is the supposed bits and pieces of stuff he intends to weld together. This pure bulldust.
Lead???!!!
Come on, pull the other one.
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