TYT MD-UV390 MD-390 Knob Guards (Revised)

Just a simple collar that is redesigned from the previous model. 

Version 1 of the redesign is meant to be printed in TPU and it slides overtop the knobs. It is crude but works.

Version 3.5 is a bit more detailed. It was meant to be printed in PLA and requires the channel and volume knobs to be removed. Once removed the guard is set down and the knobs push down over it again. There are interior chamfers that the knobs seat on holding the guard in place. I printed this with basic PLA, 0.25 layer heights and minor support. I set the distance between the support top and the model to 0.25 which made it release really easy.

It is very likely I will keep tinkering with this so watch for updates.