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Hi Danny. Hey Alex. Have you ever heard of 3D printing? Yeah of course there was so much hype about that a few years ago.

Yeah, right? Like have you ever used a 3D printer, do you have anything made from 3D printing?

I've never used one, but I do have like some boxes and stuff

that were made with 3D printing.

And what do they look like?

They're plastic, and there's lots of ridges on it because they build everything in layers over and over and over again, kind of like a lasagna or something.

Right. So this idea of depositing a material in layers makes sense for like little things that we have at home, right?

That hype around, you know, we're going to have one of these in every home hasn't really come to pass.

Right, right. No Star Trek replicators.

Not yet.

But it turns out there is a really useful place

for this kind of technique, which is in manufacturing.

So the technical term is additive manufacturing.

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