Marbleworks Compatible Epictrochoid

This is a part of a parent collection of many different marble tracks compatible with Marbleworks Grand Prix marble set. See remix source for larger collection of marble tracks.

I hope you like loops. Because this piece has all the loops. I'd say you couldn't have more loops... but I have a feeling files with more loops will land on my computer in the future.

The print does require a largish bed to print successfully!

Math for the math gods:

```
x(t) = 9 cos(t) - 5 cos((9 / 2) t)
y(t) = 9 sin(t) - 5 sin((9 / 2) t)
```