Preparation for use is the same as for the original. You will need knife 9mm, something for guiding bottle (i use axis from old printer), screw for connection to the body of fil. maker and other stuff (same as the original. Best way how to describe preparation this extension are photos. When you have the whole model assembled, you screw the attachment on just like the other parts of the filament maker.
The author remixed this model.
There are different dimensions and functionality. Using is different. It is designed for filament maker like a extension for easier using and for less work and saving time.