Caveat up front: today's batch is almost entirely hashtag-spam shorts from tiny channels, with no clear long-form educational content available. This pick is the least-bad of a weak field — choose accordingly.

Of what's on offer, "Welding mistakes that are ruining your metal projects" at least frames itself around a teachable premise: common errors that produce weak or ugly beads, and how to avoid them. The description points toward cleaner, stronger beads by addressing root causes — typically things like contaminated base metal, wrong amperage for the rod or wire, poor travel speed, incorrect work angle, or insufficient joint preparation.

For a beginner or self-taught hobbyist, a "mistakes" format can be genuinely useful because it inverts the usual tutorial: instead of one correct technique to memorize, you see the failure modes that explain why your welds look porous, undercut, or piled up. That diagnostic framing tends to stick.

That said, manage expectations — at 144 subscribers and a short-form hashtag-heavy title, this is likely a brief clip rather than a deep dive. Treat it as a quick checklist to cross-reference against your own work, not a substitute for a proper tutorial from a more established teaching channel.