[fragmede]

there's also a plastic liner on them that I'm sure helps.

[echoangle]

It also helps that they are made from aluminum which doesn’t rust like iron does.

[hdrz]

It rusts just like iron, but the rust (AlOx, or alumina) stays bonded to the metal and actually protects it.

[lloeki]

Rust being literal Fe2O3 makes a convincing argument that aluminium sure oxidises but doesn't rust pretty much by definition ;)

[wongarsu]

In other words: it rusts, but it doesn't rust like iron. It rusts in a much less destructive way because the aluminum oxide protects the rest of the aluminum from oxygen

[redeeman]

it does not rust, it corrodes :)

[euroderf]

And epoxy binds to aluminum just fine ? Epoxy is weird. What solid material does it NOT bond to ?

[AlotOfReading]

Polyethylene, like they use in food containers. Virtually nothing sticks to it unless specifically designed.

[mjanx123]

It does not bond to polypropylene and other low surface energy plastics

[psd1]

Terminology question - I understood those to be "high-energy" surfaces, because the chains are strongly bound. Is it a typo, or am I wrong?

[mjanx123]

It is really called low energy, it refers to the low attractive force of the surface, liquids bead up and do not wetten, in epoxy that results in small contact area and a weak bond, on a high surface energy material it flows into all the crannies and has enormous contact area and a strong bond.

[ridgeguy]

Teflon.

[cen0b]

Yummy, my favorite!

[echoangle]

Actually should be mostly fine since it’s pretty inert, unless you eat the stuff used to make it.

[euroderf]

Like, actually making food atop a non-stick surface that flakes.