Ask Lemmy

26707 readers

1342 users here now

A Fediverse community for open-ended, thought provoking questions

Please don't post about US Politics.

Rules: (interactive)

1) Be nice and; have fun

Doxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them

2) All posts must end with a '?'

This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?

3) No spam

Please do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.

4) NSFW is okay, within reason

Just remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either [email protected] or [email protected]. NSFW comments should be restricted to posts tagged [NSFW].

5) This is not a support community.

It is not a place for 'how do I?', type questions. If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email [email protected]. For other questions check our partnered communities list, or use the search function.

Reminder: The terms of service apply here too.

Partnered Communities:

Logo design credit goes to: tubbadu

founded 1 year ago

MODERATORS

[email protected]

What's that machine they use at the eye doctor to bend/refit your glasses? (lemmy.world)

submitted 7 months ago by [email protected] to c/[email protected]

21 comments fedilink hide all child comments

I like getting glasses off of Zenni but they never seem to fit quite right, mostly the arms. Would be nice to be able to make adjustments.

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

[–] [email protected] 15 points 7 months ago (1 children)

The closest I’ve been able to get to it is to submerge the arms in hot (nearly boiling) water for a bit, and then make the adjustment. It’s not quite as effective, but depending on what the frames are made out of it can do the job in a pinch.

[–] [email protected] 7 points 7 months ago* (last edited 7 months ago) (2 children)

Hm at what temperature do the lenses melt?

[–] [email protected] 6 points 7 months ago

my lenses didn't melt but I have definitely fucked up the coating by walking into a sauna for just a minute which is very far below 100c

[–] [email protected] 6 points 7 months ago

https://www.wikipedia.org/wiki/Polycarbonate

Probably ~130C but I would not gamble on this. I have no experience in lenses like this or their specific plastic composition. I just know most are based on polycarbonate, have made my own corrective reading, and my own anaglyph, glasses.