yummy yummy cancer juice rule

2026-05-18 02:47 UTC

thnx random textbook from 1975 such great information /j jokes aside the book is super interesting and (mostly) awesome. the name is Engineering Graphics (Giesecke et. al, 1975) and it has SO much cool stuff about hand drafting (pretty much drawing engineering diagrams by hand) and 3d sketching and so forth. picked it up from a local booksale for exactly fifty cents. of course its age does show sometimes hehe ''huh? i don't get this...'' carbon tetrachloride was a chemical once commonly used for many applications, but that has since been discovered to be detrimental to the health (and ozone layer), not unlike asbestos. this is basically saying, if you want to erase marks on your tracing cloth—itself something quite antiquated—you simply need to rub it with a highly carcinogenic chemical. as for “benzine” (do not confuse with benzene!), it is basically a hydrocarbon soup, many of the components of which may also be toxic!!! examples include toluene and benzene. as you may guess it is also very flammable x3

Replies (2)

@finalarbiter@lemmy.dbzer0.com 2026-05-18 04:21

Engineering Graphics is a great read. My first year of college, we were required to do all drafting by hand (on vellum, the whole nine yards), and even having CAD on our computers would be considered cheating. Having to do that work by hand really develops one’s sense of 3-dimensional space and how to convey information effectively in a way that CAD doesn’t require since it sort of nust does that on one’s behalf. When I’m reviewing design drawings at work, it’s usually immediately obvious if the engineer who drew them ever drafted by hand (usually it’s an age thing, younger engineers started in CAD programs). That’s not necessarily a knock on the CAD natives, they just convey information differently (the effort it once took to develop certain views defined where and how things were drawn) and don’t have the same sense of economy (again, a lot less effort to add information in CAD compared to by hand) in their layouts.

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@fullsquare@awful.systems 2026-05-18 06:51

carbon tet will destroy your liver, and it’s also a dogshit solvent. hexane is a replacement in some applications. if you need a better solvent, use toluene

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