I couldn't find a cable comb that suited my taste, so I designed it.

Print settings: 

• Filament: PETG (I recommend against using PLA due to its potential for deformation caused by heat.)
• Layer height: 0.2mm
• Supports: no
• Perimeters: 3

Notes:

• Be careful to the seam position being visible from the front, as it will spoil the otherwise nice appearance :(
• I recommended to print only one piece to check the size first.

Scale size tips:

Commonly retailed cables, awg 18 wire with 3mm sleeves do not need to be rescaled, just print as is. (Please adjust scale if you needed)

If you have a custom sleeved cable using awg 16 wire with 4mm sleeves, please adjust the scale to ±106%.