R. A. Dehi @radehi@qoto.org

@oskay Oh, I wanted to say, except through-feed dies, a cylindrical or planetary thread rolling die has threads on it, so is itself a screw. Assumed by "trilobular thread rolling screw" you meant such a thread rolling die, so the question was how to make the die with limited equipment. Was puzzled at the idea of trying to make such a die by rolling!

In how much grinding and EDM, grinding is already common for hardened ballscrews (maybe forgot about ballscrews), and EDM tapping is already common, so clearly EDM is an option for making threads, though don't know of anyone using it for outside threads now. Obviously is not competitive for volume production.

Now see that meant https://taptite.com/assets/files/taptiteii-conti-reminc_5.pdf the which is a self-"tapping" machine screw with a non-circular cross-section. ("TRILOBULAR" is a trademark.) Seems like rare geometry is principal problem, together with surface finish.

The REMINC brochure emphasizes the need to request the brand name from distributors, so maybe are selling generic manufacturers clones of off-patent REMINC screws under different name. The brochure also gives geometry pretty detailed. Fascinating product, thanks.

@oskay Is surprising to me you would think I haven't looked at how screws are made, generally speaking, when yesterday was talking about relative advantages of rolling, grinding, and EDM for making hardened threads when lathe is no option

@oskay Thanks! Any information in particular you've noticed I'm missing from the last time I studied that? I could start there.

@oskay I'd like to understand what the relevant difficulties are so that someday I can solve them.

@oskay My thought is that if roll threads onto screw A, are only work-hardened, not case-hardened or precipitation hardened or anything, so using screw A to roll threads onto screw B will probably damage the threads on screw A, unless screw B is really hot or soft brass or something. And trying to heat-treat or case-harden screw A after forming its threads will distort it unacceptably. But I don't know much about this stuff, so I'm probably misunderstanding something basic.

@oskay Hmm, want to roll the threads are going to use to roll more threads? On much softer metal, maybe? I thought that for a thread rolling screw you'd have to harden and grind it rather than just rolling; EDM or ECM might be an alternative to grinding.

@oskay I mean, does require working materials you can't work, applying processes you can't apply (thread rolling for cold-forged threads, say?), reaching precision you can't reach, or what?

@oskay Why is not a type you can make?

@brouhaha @b0rk probably worth noting explicitly that there was no architectural connection between the 4004 and the 8008; the 8008 implemented the instruction set CTC had previously implemented in discrete logic, which predated the 4004. The 4004's instruction set was largely designed by Masayoshi Son of Busicom.

@oskay What kind of screw? I wonder if you can make it.

@rabble Most of "Web3" is just scams, people faking decentralization and security. Also, most countries that have "democratic" in the name are faking democracy. The Soviet Union was named that because theoretically power rested with local workers' councils, though in practice it was authoritarian and incredibly oppressive. That would be a dumb reason to give up on democracy or local workers' councils or decentralization or security.

@rabble Let's change the current system, then, and get secure endpoints into everybody's hands. People do constantly loose domains due to hackers without recourse, not to mention loosing them to state censorship, which permits the thugs to not just silence them but impersonate them; the three I mentioned have lost many domains, though not yet all. Centralized systems architecture amplifies the power of state oppression enormously.

@rabble The ICANN dispute resolution system systematically favors big brands and multinationals and disenfranchises whoever the US government wants to censor (WikiLeaks, Sci-Hub, The Pirate Bay). The .org scandal should have been a wakeup call that is also an unlimited source of protection money and corruption. Blockchain alternatives eliminate the central authority and should have been the solution from the beginning; just hadn't been invented yet.

@rabble What's the alternative to using NFTs for identity, though? DNS? Public key hashes represented with biometric wordlists?

@bbaugh Is a good Wikipedia article