Tired of your Xiaomi X20+ getting stuck or refusing to cross the small step between your rooms? This modular, 3D-printable ramp system is the ultimate solution for seamless whole-home cleaning. Designed specifically for the Xiaomi X20+ (and compatible with other robots with similar cliff sensors), this kit allows your vacuum to glide smoothly over thresholds up to 4.5cm high.

Key Features:

• 5 Height Options: Includes precise ramps for 2.5cm, 3.0cm, 3.5cm, 4.0cm, and 4.5cm step differences (increments of 0.5cm) so you get the exact slope needed.
• Modular Width System: Choose between 9cm (perfect for tight spaces, furniture legs, or narrow doorways) and 18cm (ideal for standard door frames and wide hallways).
• Puzzle-Fit Assembly: The parts feature interlocking puzzle joints. Mix and match the 9cm and 18cm segments to perfectly fit any doorway width—no gaps, no shifting, just a solid, continuous surface.
• Optimized Geometry: Designed with a gentle slope angle to ensure the X20+’s suspension and wheels handle the climb smoothly without bottoming out.

⚠️ CRITICAL PRINTING WARNING – PLEASE READ BEFORE SLICING:

DO NOT PRINT THIS MODEL IN BLACK OR EXTREMELY DARK FILAMENTS.
The Xiaomi X20+ (like many robot vacs) uses infrared cliff-drop sensors. Black filament absorbs the IR signal, making the robot "think" the ramp is a bottomless hole. It will reverse and error out rather than drive down the ramp.

✅ Solutions:

1. Best Option: Print in White, Light Gray, Beige, Silver, or Wood-filled PLA. These reflect the IR beam properly and will work straight off the build plate.
2. Alternative: If you prefer a darker aesthetic, print in a light color and apply a wood-grain or light-colored adhesive foil/vinyl wrap on top (as tested by the designer).