Found in 2 comments on Hacker News
JKCalhoun · 2025-07-20 · Original thread
Tried a few links and found them broken.

For example, Dunn's book on soap making. Nonetheless, Googled it:

https://www.amazon.com/Scientific-Soapmaking-Chemistry-Cold-...

The lead me to his Caveman Chemistry book on Amazon as well:

https://www.amazon.com/Caveman-Chemistry-Projects-Creation-P...

oldbuzzard · 2015-02-21 · Original thread
Kevin Dunn's "Caveman Chemistry"[1] is a fun book.

Instructions for tinkerers "for making bronze from metal ores; glass from sand, ashes, and limestone; paper from grass or straw; soap from fat; alcohol from honey; photographs from egg whites; chlorine from salt water and celluloid from cotton."[2] among other things.

[1] http://www.amazon.com/Caveman-Chemistry-Projects-Creation-Pr...

[2] http://www.cavemanchemistry.com/