Ender 3 Filament Double Roller Guide

!!Working but still not perfect!!

This is a WIP double-rollered version of the [robathome's remix](https://www.thingiverse.com/thing:3061551).

There is an another [doubleroller guide by klingler](https://www.thingiverse.com/thing:3389293).

One of my first attempts to use modelling software so be aware and be gentle.

Known problems:
- there is not enough room for the roller if you push the thing where it needed to be (see the gaps in the picture, there is room between the plastic and the frame)
- the models are probably 10x bigger (so if you import them use a 10% scale)

I used M4x25 bolts, but they are too long, so I used more nuts.

Actually it's working pretty good.

Some hints:
- I think you should use the ring and spacer from this remix: [robathome's remix](https://www.thingiverse.com/thing:3061551)
- you will need 4 spacer and 2 rings
- I needed to scale the rings to `29.4059` both X and Y separately without affecting Z (that is the size of the rings in