Making Stone Tools - Obsidian

Picked one by one from a mixed channel. Transcript check: both title readers certain; 2 of 5 sampled certain picks confirmed by transcript, none failed. Channel rule: Include only plainly titled technique tutorials whose primary aim is teaching a skill (e.g. the 'Between Strikes' series and 'How To' / 'Make ...' primitive-skill builds). Exclude challenges, survival-trip vlogs, sponsored or gear comparisons, Q&A sessions and any video with clickbait title wording.