This is a 2-part replacement case for the RTL SDR (model R820T2). It has provisions for the external antenna, a light-pipe for the LED indicator, and 5× light-pipes for the IR receiver. It also has hexagonal cooling holes on the bottom.
My original case had become tacky from the original soft-touch rubber. So I set out to make a simple replacement one while retaining the original features.
Print each case half with the flat face on the print bed. No supports are required. Glue is required for assembly; just place a small drop on the corners to allow for possible future disassembly.
For the light-pipes, use a piece of clear filament cut flat on each end and of the appropriate length. Some drilling may be required to get a snug fit.
The author marked this model as their own original creation.