I really liked the unibody style of riser and so I printed AP's remix of a K1 riser, but I found the distance between the corners was a bit too big resulting in the legs not fitting into the four corners of the printer. 

This has a filament sensor relocation mounting point and glass slider rails.

Changes:

1. Reduced each side's plates overall distance
2. Reduced each side's beams overall distance
3. Added a hole in the rear plate for a USB cable passthrough (for LED strip)
4. Remove the 3rd knub in on each plate so there is no manual removal required after printing
5. Optimized print orientation of all parts and minimal supports for strength and easy printing
6. Colorized “Creality” text on front plate for multicolor printing

I also added the filament sensor cable bracket from here into the 3mf since it nicely holds the wire away from the rear belts after relocating the sensor. [https://www.printables.com/model/905360-k1-max-filament-sensor-wire-bracket](https://www.printables.com/model/905360-k1-max-filament-sensor-wire-bracket) 

Assembly is straight forward but here's a summary:

1. Glue and clamp the corners to beams
2. Glue and clamp the plates to their other half
3. Glue the combined plate assemblies into the corner/beam assembly
4. Done

                                       Assembled plates and frame with LED strip in place. 
                                      Next step is to insert the plates and glue all together.

I used this LED strip: [https://www.amazon.ca/dp/B0C2P6Y9QN](https://www.amazon.ca/dp/B0C2P6Y9QN) 

I used Bambu PLA, PETG or tougher would likely be better to mitigate warping.

Note: If you want the stl's you'll have to open the 3mf in Bambu Studio or Orca Slicer and export the stl's manually.