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I would have liked some pictures to know what I'm reading about

Primitive Technology on YT has built some of these tools and cut holes with hot coals.

Yes, this would have been more satisfying and faster to consume as a youtube video.

I recommend the Primitive Technology channel for this! He uses almost all of these to some extent.

He literally uses rocks to bash on anything.

Rocks are fantastic hammers. Sharp rocks can cut lots of things too. The original multitool. Comes in various colors and hardnesses too.