If you finished your locomotive model or simply need casing for a radio transmitter - here is one.
It was designed to fit 3xAA battery holder and AVT5290 radio module.
To learn about the assembly please take a look at this PDF instruction:
>>No support is needed during printing
>>Printers with small bed sizes will do fine (13x14 cm bed is OK)
>>No special tools are needed during assembly of printed parts (I use metal nail file for finishing places where excessive material remained)
>>The model's dimensions after assembly are: 139x110x44 mm (5.47x4.33x1.73 in).
I'll be happy to help you in case of any questions.
General support contact is: