←back to thread

A 10-Year Battery for AirTag

(www.elevationlab.com)
673 points dmd | 6 comments | 18 Dec 24 18:17 UTC | HN request time: 0.623s | source | bottom
1. humanpotato ◴[19 Dec 24 19:32 UTC] No.42464913[source]▶
What is the point of CNC machined screws? I have only seen that type of thing on specialized military applications and the like.

I'm sure standard rolled screws would be just fine...

replies(5): >>42464965 #>>42465192 #>>42465555 #>>42466488 #>>42471948 #
2. alamortsubite ◴[19 Dec 24 19:37 UTC] No.42464965[source]▶
Not technical razzle-dazzle but the sheer aesthetic superiority of its elegant parabolic design make the GFX-100 a marketing breakthrough!
3. kube-system ◴[19 Dec 24 20:06 UTC] No.42465192[source]▶
Well, it is ambiguous enough of a statement that it could be both. Maybe rolled threads and CNC lathe finish on the head... to make it look nice? Rolled threads are stronger anyway. Zooming in, it does look like there's turning marks on the head of the screws.
4. jonhohle ◴[19 Dec 24 20:46 UTC] No.42465555[source]▶
I had the exact same thought. The screws are recessed, so knurling is unimportant. I love the idea and will buy some for the cars but give me a stainless m5, hex cap head screw, I don’t care about the process.
5. to11mtm ◴[19 Dec 24 22:41 UTC] No.42466488[source]▶
If I had to guess, they had easier access to a CNC or someone with CNC skills vs a shop that could get them rolled screws in the right size within their timeframe.

The 'nice' thing about CNC screws is that it's cheaper to do short runs. (which, on the military side, can help on some 'security by obscurity' lengths for revers engineering).

That said Rolled screws are almost always gonna be better unless the die is fucked.

6. myself248 ◴[20 Dec 24 15:31 UTC] No.42471948[source]▶
Marketing wankery. It's _extremely_ valuable among a certain market, and when you look at the pricing here, oh yeah, that's their market.