Flashforge Creator Pro See Through Filament Guide

Tired of having to peek behind your Flashforge Creator Pro to check the colors of the filaments currently loaded? Well, you are in luck. This thing will allow you to see the filament colors while looking at your printer from the front. As a bonus, you will also have better visual feedback while loading a new filament into the filament guides.

To build this thing, all you need to do is getting a clear PTFE tube with 4mm inner diameter and 6mm outer diameter (sometimes called 4X6mm or just 4X6), cut it with the sharp knife to the same length as the existing tube and insert it instead.

Those clear tubes are available on ebay from several vendors and cost a few bucks. Search for 'clear PTFE tube' or something like that.

My science nerd friend tells me that there is no such thing as clear PTFE and that clear material is probably FEP (Fluorinated Ethylene Propylene) but my 3D printer doesn't know it and works just the same.