Drop-light mount adapter for sloped ceilings

Mounting the two drop-lights directly to the sloped ceiling would have looked odd, so I designed this part. For the dangling cables I designed a connection box to be mounted at the location of the old lamps. 

Additional required parts:

• Lamp adapter:
  • 2x Ruthex M4x8.1 threaded inserts
  • 2x M4x14 counter-sink screws
• Cable outlet:
  • 2x Ruthex M4x8.1 threaded inserts
  • 2x M4x12 counter-sink screws

The slope of the ceiling I designed this for is 20.7° but the much longer model can be rotated and cut in the slicer to match any other slope. Here is an example how to do this in SuperSlicer, PrusaSlicer or Slic3r:

Alternatively, the FreeCAD file (LampenadapterXL.FCStd) is provided as a base for more customization.