UPDATE Based on suggestions here are a few changes. This mount is designed to fit onto the Rostock Max V1 & V2. It's a standard J-head mount with hole patterns for the Rostock effector plate. Since the Prometheus is customizable, just pick the .stl files that are suitable for your needs. 52-58mm for a compact setup and 58-64mm for a longer setup. I've also included an e3d top plate and a J plate with 43mm printed standoffs which lets the head and fan clear the effector plate.I recommend ABS for printing due to the flex it gives to the cable holders. Use a strong infill (perhaps .4) to really give it stiffness. You may need to ream out the holes after printing in order to get the machine screws to go through the holes.