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Bugatti has 3D-printed a brake caliper… from titanium

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Bugatti has 3D-printed a brake caliper… from titanium | Top Gear

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Yes! It’s the latest thing you didn’t know we could, or should, do!

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Bugatti has 3D-printed a brake caliper… from titanium

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Yes! It’s the latest thing you didn’t know we could, or should, do!

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Yes! It’s the latest thing you didn’t know we could, or should, do!

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Bugatti has 3D-printed a brake caliper… from titanium

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Bugatti has 3D-printed a brake caliper… from titanium

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Bugatti has 3D-printed a brake caliper… from titanium

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Yes! It’s the latest thing you didn’t know we could, or should, do!

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Not content with being the go-to name for anything ruthlessly quick or obsessively over-engineered, Bugatti is now staking a claim for a third adjective: over-complex.

OK, so maybe they already had a pretty decent handle on that one – check out our deep dive on the Chiron here in case you’ve forgotten – but they seem to be hell-bent on driving that message home. How? By 3D printing a brake caliper from titanium. When this news landed on our desk (or, y’know, popped up in our email notifications), we thought that Bugatti had 3D-printed a caterpillar. And, as amazing as a 3D-printed Bugatti caterpillar would be, it was in fact a caliper. Also, we probably need to start getting more sleep.

Moving on. As you’ll know, 3D printing has been around for a good while now, but it usually relies on specific polymers or easily sintered metals (a complex term that means heat-forming without melting). And you might have to consult a very clever person for this next part, but titanium is apparently quite difficult to manipulate in a 3D printer. Because science.

Nevertheless, Bugatti, who should be the all-powerful and unbeatable antagonist in Cars 4 – “You can’t beat him, Lightning… he’s made from 3D-printed titanium, and you’re a stock car that sounds eerily like Owen Wilson” – has found a way to do much science and 3D print titanium. Well, it’s a titanium-aluminium-vanadium alloy. So, basically adamantium. And you could argue that’s even more impressive.

So, you’d imagine the new brake caliper is, in some way, better than what’s gone before. And you, sir, ma’am, or however you self-identify, are correct. A single square millimetre (i.e. not a lot) of this Titan-Alu-Vanadium alloy can support 125kg (quite a bit). Even so, the caliper – the biggest ever developed for a road car at 41cm long, 21cm wide and nearly 14cm high – only weighs 2.9 kilos. Just for comparison, the Chiron’s bespoke, forged-aluminium units weigh nearly five kilos each.

But couldn’t Bugatti just mill a block of billet titanium, like they do with aluminium? That’s a negative, good buddy – titanium is quite strong. So strong, in fact, that Bugatti developed a way to lay fine layers of its super-alloy dust, melting each of the 2200 layers with 400-watt lasers, in a process that takes 45 hours per caliper, because it’s easier than trying to mill billet titanium. So, now you know.

This is all well and good, but what does it all mean for you? Well, it’s a lot like the S-Class; to begin with, technology like ABS and curtain airbags were cutting-edge and only available in the most rarefied air. But, little by little, the technology was repeated, democratised and adopted, to the point where the technology we expect in a supermini would leave an Eighties S-Class in the dust. But we still remember the S-Class as a technological pioneer.

So, could that happen with Bugatti’s 3D-printed caterpillars… er, calipers? Erm… check back with us in 20 years, yeah?

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Not content with being the go-to name for anything ruthlessly quick or obsessively over-engineered, Bugatti is now staking a claim for a third adjective: over-complex.

OK, so maybe they already had a pretty decent handle on that one – check out our deep dive on the Chiron here in case you’ve forgotten – but they seem to be hell-bent on driving that message home. How? By 3D printing a brake caliper from titanium. When this news landed on our desk (or, y’know, popped up in our email notifications), we thought that Bugatti had 3D-printed a caterpillar. And, as amazing as a 3D-printed Bugatti caterpillar would be, it was in fact a caliper. Also, we probably need to start getting more sleep.

Moving on. As you’ll know, 3D printing has been around for a good while now, but it usually relies on specific polymers or easily sintered metals (a complex term that means heat-forming without melting). And you might have to consult a very clever person for this next part, but titanium is apparently quite difficult to manipulate in a 3D printer. Because science.

Nevertheless, Bugatti, who should be the all-powerful and unbeatable antagonist in Cars 4 – “You can’t beat him, Lightning… he’s made from 3D-printed titanium, and you’re a stock car that sounds eerily like Owen Wilson” – has found a way to do much science and 3D print titanium. Well, it’s a titanium-aluminium-vanadium alloy. So, basically adamantium. And you could argue that’s even more impressive.

So, you’d imagine the new brake caliper is, in some way, better than what’s gone before. And you, sir, ma’am, or however you self-identify, are correct. A single square millimetre (i.e. not a lot) of this Titan-Alu-Vanadium alloy can support 125kg (quite a bit). Even so, the caliper – the biggest ever developed for a road car at 41cm long, 21cm wide and nearly 14cm high – only weighs 2.9 kilos. Just for comparison, the Chiron’s bespoke, forged-aluminium units weigh nearly five kilos each.

But couldn’t Bugatti just mill a block of billet titanium, like they do with aluminium? That’s a negative, good buddy – titanium is quite strong. So strong, in fact, that Bugatti developed a way to lay fine layers of its super-alloy dust, melting each of the 2200 layers with 400-watt lasers, in a process that takes 45 hours per caliper, because it’s easier than trying to mill billet titanium. So, now you know.

This is all well and good, but what does it all mean for you? Well, it’s a lot like the S-Class; to begin with, technology like ABS and curtain airbags were cutting-edge and only available in the most rarefied air. But, little by little, the technology was repeated, democratised and adopted, to the point where the technology we expect in a supermini would leave an Eighties S-Class in the dust. But we still remember the S-Class as a technological pioneer.

So, could that happen with Bugatti’s 3D-printed caterpillars… er, calipers? Erm… check back with us in 20 years, yeah?

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Yes! It’s the latest thing you didn’t know we could, or should, do!