I've made brake rotors out of Lead, Aluminium, and Copper.

In this video, I make Brake Rotors from scratch auto of Lead, Aluminium, and Copper alloy. I chose these metals because they are very different one to each other.
It was relatively easy to cast Lead and aluminum. The tricky part was to cast copper because of its height melting point ​(1084.62 °C, ​1984.32 °F).

I didn't know what to expect when I tested the brake disc made of copper alloy. I thought it would melt, but it didn't.
For the Rotor made from aluminum, I melted cans made from aluminum alloy Al 3004 / Al 5182 and some Grounding wire Al5052. I was not surprised that it is brittle and breaks into pieces subjected to massive forces.
Lead is very soft and highly malleable. It made a spectacular show in our video; because of the friction, the Disk started melting, spurting like a stream, and solidified instantly before falling to the ground.

Rotors Weigh:
- Original cast iron 3,9 kg/8.5lb
- Lead 8,2kg/18lb
- Aluminium 1,7kg/3.7lb
- Copper 5,6 kg/12.3lb

The moral of the story: Don't make brake Rotors out of Lead :)
Enjoy!

WARNING: This video is only for entertainment purposes. If you rely on the information portrayed in this video, you assume responsibility for the results. Have fun, but always think ahead, and remember that every project you try is at YOUR OWN RISK.

[AffordBindEquipment]

the real heroes in this whole thing are the wheel bearings. How they lasted through all this without the grease boiling out and grinding to a halt is amazing.

[Zgronar]

The gearbox blew up, and they have a *spare one just laying around* absolute legends

[pingpong]

I like videos of people actually doing what the title says instead of yapping for 15min and then the last 2min of the video is the actual thing

[anthonyreed]

I think machining the rotors first would help a lot

[nathanjames]

The answer to what would happen if your brake rotors were a bit softer or more brittle. Love how the lead tore out and shook the whole suspension. This is the video the world needs.

[crankboost]

No words to describe videography and the hard work required without passion and determination its impossible

[wornoutwrench]

That was fun.
I will admit, I figured the copper would last the longest but I though there would be more damage to it.

[phdtobe]

Gotta appreciate how your team was willing to expose themselves to a bangload of lead dust for that last experiment with the lead rotor! 🤗

[frankens]

wow.. I love the detail in the first step... the cast making.. then skipping rather repeating the boring sections (not boring but repeated).. makes the video much more enjoyable. and the floor remained spotless...

[Ghodum]

Absolutely insane seeing just how soft lead really is, it stretched right off the bolts!

[thelespauldude]

Can we just take a minute to appreciate that editing? Solid 10/10

Edit: put the disks on a lathe to make them smooth and perfectly round, would probably make a big difference

[neveryawn]

Thats such an awesome way to light the crucible, dropping a lit match down.

[RexSkittles]

The amount of work that went into this video is impressive!! I’m blown away!

[thijs_kramer]

Making quality content as always man! this'll blow up mark my words!

[AB-tclx]

The copper impressed me so much. I looked on the internet and yes, they do actually make copper rotors if you want them.

[charlied]

I am willing to bet that this person has never been bored in their life. I'm not sure why this was so entertaining. It just was. Thanks.

[Udvaros]

Imaginative, spectacular, instructive - and sometimes funny. Thank you for the experience!

[earlemorgan]

It's so pleasing to watch this. You're what I hoped to be.

[MinusIsDeceased]

Greatly entertaining video held together with fantastic editing!
Now, magnesium.

[MikeDCWeld]

The failure on the lead rotor was amazing! The copper actually looked like it could be a viable option. I would be quite interested to see a video where you cast a full set of copper rotors (with some machining to insure they're properly sized and balanced) and test them for performance, reliability, and longevity against standard rotors.