How tough is the new Gorilla Glass 6?

Wait, Gorilla Glass 5 has been improved upon?

Fine, but I'm sure nothing will ever surpass Gorilla Glass 6.

In all honesty, I did like seeing the various tests that the glass designers undertake when they're developing a new glass. I haven't had the issues described with the purse, but I'm assuming those are real issues.

In the video below, we get a brief glimpse into the manufacturing and prototyping of the various glass compositions on the way toward a final product.

Plastic Injection Molding

Well, if they're going to talk about - and briefly focus on - how Lego bricks are made (not Legos, ya savages), then I'm going to post the video.

Our material science class at Princeton High School doesn't get anywhere near practicing injection molding. One of our dreams out in the distance is to sometime get to lost wax casting, but that's about as close as we've considered. In this video, however, The Engineer Guy does a great job explaining the process of injection molding and a bit of the history of celluloid because one of the claimants for the invention of celluloid is the inventor of the injection molding process.

Plus there's the Lego connection...more of which after the break...

MAKING A BOWIE KNIFE WITH REAL ENGINEERING!!! PART 2 - WHY we heat treat steel!

Finally, the testing...

The first part of the video is more making a knife - grinding the blade, drilling to attach the handle.

Then, at 5:50, the actual materials testing comes in. Alec Steele takes a steel bar and heat treats it different ways (not on camera, sadly) and gives each piece a few solid wacks with a sledge hammer.

These two videos (Alec's and Real Engineering - whatever that guy's name is) really balance the two sides of material science. Alec shows a lot of a practical knowledge. Real Engineering shows a lot of academic knowledge. Together they're pretty awesome.

Oh, and the testing wraps up around 12:25. Then it's back to finishing off the handle of the Bowie knife.

MAKING A BOWIE KNIFE WITH REAL ENGINEERING!!! PART 1

I get that much of your personal taste in enjoying YouTube videos (or not) comes down to the personality of the presenter. That's why I'm going to refrain from commenting on Alec Steele's videos.

I won't mention the overly-enthusiastic schtick.

Honestly, I won't.

I'm a little disappointed that this isn't the video I was really looking for. I was looking for the video showing the testing of the various heat treatments of the steel.

I guess that's on part 2. Arrgghh...I guess that's next week then.

Heat Treatment -The Science of Forging (feat. Alec Steele)

There is something weird happening with the Real Engineering guy's accent. I'm struggling to place it exactly. There's a sing-song lilt to it that's screaming, "Irish" to me. Then, at 1:50, there's a weird ll-th thing going on with the 'through the heat treatment process' phrase that makes me think he's almost got Welsh in there. His patreon page says Galway, Ireland, but I've not heard that ll-th thing anywhere but from Wales.

Can anybody definitely say where he's from?

I'm going to have to check out the testing video from Alec Steele (an aptronym). Maybe that'll be next week's post.

So much great metallurgical explanation here...BCC, FCC, ferrite vs austenite vs pearlite, phase diagrams, quenching vs tempering vs annealing (normalising - British spelling, natch).

Aluminum recycling - How it works by Norsk Hydro

We have to recycle more.

There are many countries that are far, far better at recycling than is the US, but we (the US) have to get better.

I hadn't thought about the challenge of not just sorting the majority metals (steel from aluminum from copper from etc) but rather sorting the various similar metal alloys out from each other. The use of x-ray spectroscopy to do that is an application that I would never have considered, and the puff of air used to fire away the unacceptable aluminum alloy chips is amazingly fast.

It's amazing to me how technologically advanced the recycling industry is becoming.

Smart Materials of the Future - with Anna Ploszajski

"Rock-paper-scissors is a game that you use to compare materials' properties. The rock blunts the scissors because rock is harder than stainless steel."

C'mon, nerd, rock-paper-scissors is just a game like mumbledepeg or roshambo.

The simplicity of showing a smart material via pine cones is brilliant.

Oh, I found a definition of smart materials that I very much like (via BBC): "[s]mart materials have properties that react to changes in their environment. This means that one of their properties can be changed by an external condition, such as temperature, light, pressure or electricity. This change is reversible and can be repeated many times."

Other smart materials mentioned in the video are lime mortar from the Egyptian pyramids, piezoelectric quartz crystals, thermochromic pigments (on a mug), NiTiNOL, and ferrofluids. Most of the latter materials are applied to the future of airplane design.