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.
Technical
PLA does the job, I put 50% infill, 1.2mm walls and 0.8mm top/bottom to be sure that it will be strong enough and it is.
You'll also need:
1x M5x20mm flat head screw
1x M5 nut