this post was submitted on 13 Jul 2023
615 points (97.4% liked)
Asklemmy
44155 readers
1314 users here now
A loosely moderated place to ask open-ended questions
Search asklemmy ๐
If your post meets the following criteria, it's welcome here!
- Open-ended question
- Not offensive: at this point, we do not have the bandwidth to moderate overtly political discussions. Assume best intent and be excellent to each other.
- Not regarding using or support for Lemmy: context, see the list of support communities and tools for finding communities below
- Not ad nauseam inducing: please make sure it is a question that would be new to most members
- An actual topic of discussion
Looking for support?
Looking for a community?
- Lemmyverse: community search
- sub.rehab: maps old subreddits to fediverse options, marks official as such
- [email protected]: a community for finding communities
~Icon~ ~by~ ~@Double_[email protected]~
founded 5 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
So they just used a pocket knife to open cans for 30 years? So dangerous...
Not sure when this became a thing, but it feels relevant and might be useful to someone someday.
a formerly homeless friend once showed me that taking a brick and grinding it on top of the can, will open it without a knife. the 'ridge' of the can, the metal circle that runs along the diameter at either the top or bottom, is a metal 'lid' that's folded or pinched shut onto the other piece of metal, the 'cup'. (single quotes around terms i picked and might not be official jargon)
in just a few minutes, the brick ground the metal off the ridge, seperating the lid from the cup, which easily popped out. technically you don't really need any tool, just some relatively flat concrete or a rough flat rock. or even low grit sandpaper.
i don't recommend tossing out the can opener though, there is a chance of metal shavings falling in if you aren't careful. still might be useful in an emergency.
Many Swiss Army knives have a can opener. You hook a part of it under the can rim and it acts as a lever for the small knife blade above it. You simply work your way around the can, cutting the lid a bit at a time. I've done it many, many times. It's safe and easy.
https://www.google.com/search?q=swiss%20army%20knife%20can%20opener&ie=utf-8&oe=utf-8&client=firefox-b-m
I think hammer and chisel was the common way.