I printed and installed this awesome accessory by member graham01. But I wasn't able to have visibility of the extruder gear or the filament especially when loading the filament.
Most often than not, I would forget to pass the filament through the guide in the Extruder cover. As a result, I would end up not using the cover because I would have to unload the filament and then reload it again, which wasn't practical especially after the printing had commenced!
Therefore, I modified this part with a couple of features to make it more usable.
The semi-circular windows on the top give me better visibility of the filament and the extruder gear specifically when loading the filament. The slots in the filament would allow me to slip the filament into the filament guide and put the cover on to the extruder (even when printing is in progress!).
These modifications have no adverse impact on how the filament is guided into the extruder while at the same time it's easier to load the filament.