This is a remix of BaGooN's PC PSU Cable Combs, I made the back side smooth because I think it looks better.
As with the original this one is made for 3mm cables, scale up to 106% for 4mm cables.
Print in PETG or better for heat resistance and flexibility.
Works well with 0.4 mm nozzles, no need for supports or brims.
I recommend printing by object if you print many at once.