Your hand lettering is excellent by the way. Thanks for taking the time to do that. It's a lost art.
The only works of comparable quality I am aware of are classics like the Moosewood Cookbook[0] (famously completely hand typeset), Allen and Mikes Really Cool Backcountry Ski Book[1], and Anybody's Bike Book[2].
Hand illustrating technical content is so much better than sterile diagrams, and it lends a sense of personalization, especially if the illustrator is also the author, which is a rarity.
The only works of comparable quality I am aware of are classics like the Moosewood Cookbook[0] (famously completely hand typeset), Allen and Mikes Really Cool Backcountry Ski Book[1], and Anybody's Bike Book[2].
Hand illustrating technical content is so much better than sterile diagrams, and it lends a sense of personalization, especially if the illustrator is also the author, which is a rarity.
[0] https://www.baumanrarebooks.com/rare-books/katzen-mollie/moo...
[1] https://skimo.co/allen-mikes-backcountry-ski-book
[2] https://archive.org/details/anybodysbikebook00cuth