Technology

59414 readers

3119 users here now

This is a most excellent place for technology news and articles.

Our Rules

Follow the lemmy.world rules.
Only tech related content.
Be excellent to each another!
Mod approved content bots can post up to 10 articles per day.
Threads asking for personal tech support may be deleted.
Politics threads may be removed.
No memes allowed as posts, OK to post as comments.
Only approved bots from the list below, to ask if your bot can be added please contact us.
Check for duplicates before posting, duplicates may be removed

Approved Bots

founded 1 year ago

MODERATORS

846

Leaked Email Shows Elon Musk Demanding "Sub 10 Micron Accuracy ” Cybertruck Parts (jalopnik.com)

submitted 1 year ago by stopthatgirl7@kbin.social to c/technology@lemmy.world

350 comments fedilink hide all child comments

Tesla is facing issues with the bare metal construction of the Cybertruck, which Elon Musk warned was as tricky to do as making Lego bricks

you are viewing a single comment's thread
view the rest of the comments

[–] HessiaNerd@lemmy.world 9 points 1 year ago (1 children)

Micron, as in 0.00004"? Yes you COULD hold it, with second ops and temp control.

[+] cryomancer20x6@lemmy.sdf.org 6 points 1 year ago* (last edited 1 year ago) (1 children)

[deleted]

[–] curiousPJ@lemmy.world 11 points 1 year ago (1 children)

The total tolerance is .0004". In equally disposed bilateral tolerancing it will be +-.0002".

[–] AlDente@sh.itjust.works 4 points 1 year ago (2 children)

Eh, if someone tells me to reduce a tolerance from 5 to 10 thou at work, it's understood that it's +/-5 and 10. I don't think I've ever heard someone use the full range of a tolerance in conversation. If the tolerance isn't bilateral, it would be said like plus 5, minus zero. Anyways, +/- .0005" is our standard tolerance on the span of all dowel hole pairs.

[–] curiousPJ@lemmy.world 2 points 1 year ago* (last edited 1 year ago) (1 children)

Bilateral tolerancing is a Machinist's first introduction to tolerancing so it's no surprise to run that as default. And I suppose GD&T is not heavily used where you are.

If you're given a parallelism tolerance of 10 micron are you assuming that to be +-10 micron? True position? Angularity of 5 thou? Etc... The only feature control that could be interpreted as bilateral by default is profile and it's still communicated by its total tolerance.

Simple +- tolerancing isn't the industry standard anymore. And if Tesla prints are anything like spaceX ones... It's basically all GD&T and minimal title block tolerances.

[–] AlDente@sh.itjust.works 1 points 1 year ago

I use GD&T on all my drawings, including 100% of my hole callouts. However I'm one of the more enthusiastic adopters of ASME Y14.5 at the place I work. Therefore, I get what your saying regarding the tolerance range, but since most of my coworkers are still relying on block tolerances, I'll refer to a .010" positional tolerance as a "+/- .005" equivalent" in conversation so there is no miscommunication. I can see how this is not the norm.