This is a friction fit MyLaps Transponder mount for RC vehicles, notably the Slash (derivative chassis) and the Tekno vehicles.

Printing:
Infill: 42% or similar because it's the answer to everything
Filament: KVP ABS
Layer Height: 0.2
Print just like you would any other structural part, as long as your printer is dialed in this will work a treat.

Added a bit more substance to the base model as this now allows a friction fit of the transponder with no servo tape needed. Please let me know if this was helpful to you. Original inspiration https://www.thingiverse.com/thing:4370224