Caboose

joined 2 years ago
[–] Caboose@lemmy.world 1 points 1 year ago

What about a pre-extruder or a set (or pultruder?) that brings it to just below the glass transition temp, but still at the original filament size? Water boils off, plastic is left!

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

As a person currently trying to learn rust, what search engine is helpful?

[–] Caboose@lemmy.world 1 points 2 years ago

Sure: https://www.prysmiangroup.com/sites/default/files/business_markets/markets/downloads/datasheets/SMF---Single-Mode-Optical-Fiber-SSMF.pdf

You are right the core of most optical fibers is either 8-9um for singlemode, or 62.5 or 50um for multimode. The cladding, which is also made of glass, surrounds the core and this is almost always 125um. Often there is more than one layer that makes up the cladding glass to help reduce the bend radius before you start to attenuate your signal. You need both the core and the cladding of different refractive indexes to create total internal reflection, which is how fiber optics work over long distances with low loss.

The glass (core + clad) is the only part of the fiber that is really recyclable. Everything else is plastic that is difficult to chemically remove.

There's a lot of really bad literature out there on fiberoptics, so I don't really blame anyone for not knowing this stuff. Here's a pretty good article that sums up how fiberoptics work I pulled off google: https://www.ofsoptics.com/faq-guide-to-fiber-optic-cable/how-do-communications-fiber-optic-cables-work/

[–] Caboose@lemmy.world 5 points 2 years ago

Some are complex, most aren't I'd say.

[–] Caboose@lemmy.world 10 points 2 years ago* (last edited 2 years ago) (2 children)

Most optical fiber is 125um of glass with 250um coating. The coating and the jacketing that make up the cable (mostly non-recyclable plastic) are the real problem.

[–] Caboose@lemmy.world 15 points 2 years ago (7 children)

Fiber optic cables are very much not recyclable, at least with the current recycling technologies.

[–] Caboose@lemmy.world 10 points 2 years ago
  1. [Strength] Throw the cran-brain on the floor
  2. Dig into the cran-brain
  3. Take your meds
  4. [Dexterity] Try to escape your family's Thanksgiving celebration with the cran-brain
[–] Caboose@lemmy.world 2 points 2 years ago

If you think about it, if looking 10 hours younger was constant, you basically created eternal youth. I'd say that's pretty great.

[–] Caboose@lemmy.world 1 points 2 years ago (1 children)

Are you using a switch on the way in?

[–] Caboose@lemmy.world 3 points 2 years ago

I have many of these in my back yard every year. They are closely related to blueberries! I wouldnt eat one but apparently you can for a good time!