This part has been designed with the help of FreeCAD 0.17 to repair the broken handle of a Melitta press coffee maker (in french: cafetière à piston.). It might be suitable for other brands such as Bodum or Melior.
The glass coffee pot has a diameter of about 96mm. The ring bracket surrounds and catches the top of the remaining plastic so it is a bit larger. If it doesn't match you coffee maker's size, you can either scale it a bit or edit it with FreeCAD, source file is provided.
Feel free to use and share this design. Good design is hard work, donations are welcome.