Update: Redid the whole thing. Now sits straight at the rear. Most importantly, this doesn't get your power wires caught in the props when using taller motors (1306 or 1407).
Also, this way you can stick a 4-LED WS2812 square to it with sticky tape.
Spacer has a brim built-in for better adhesion.

Simple mount for a Xt30 connector to keep the battery wires out of the propellers.
Slide the spacer on first, then the mount on top. File down the spacer until it just fills up the space between top and bottom plate.
If needed, the post hole can be drilled to size with a 5mm drill bit.
The XT30 connector should slide in with little force. Add a drop of superglue on all four sides before pushing it in (do a test fit first, though).

Mendel90

Doesn't Matter

No

0.2mm