Spin casting (mirrors)

Okay kiddo, let me explain spin casting for you. Imagine you have some play dough and you want to make a ball out of it. You can roll it in your hands until it becomes a ball shape, right? Well, that's kind of how spin casting works.

But instead of play dough, we use a special kind of liquid material called a "mirrored coating." This is what we use to make mirrors. It starts off as a liquid, just like water, but when it dries, it becomes a shiny reflective surface just like a mirror.

Now, to make the mirror, we take a metal disk and we attach it to a machine that spins it really fast. We pour some of the mirrored coating onto the spinning disk, and as it spins around, the coating spreads out evenly over the surface of the disk. Then we leave it to dry.

When it's all finished and dry, we use a special tool to carefully remove the shiny mirror surface from the disk. We can then attach it to whatever we want – like the back of a bathroom mirror or a telescope lens.

So that's spin casting – just like rolling play dough, but with a special liquid material and a spinning machine, and used to make shiny mirrors!