The Focusrite Scarlett 2i2 (4th gen) has a circular volume LED around the input 1 and 2 inputs. At the time of this file's creation, there is no software solution for disabling it. This knob was designed to block out that light.
This knob was only tested with a Focusrite Scarlett 2i2 4th generation, although it may work for other generations and models.
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Models in photos were printed with Hatchbox True Black PLA with a standard 0.4 nozzle with a Prusa MK4S and MMU3 device attached. The 0.15mm structural profile was used with ironing enabled to create smooth top surfaces.
The author marked this model as their own original creation.