I looked around and tried a few different versions of a printed comb but didn't find one that I really liked, so I designed my own. 

The teeth are rounded which I am hoping will prevent any damage to hair as it passes through, and the gently sharpened tips provide immense scratching pleasure for an itchy face that's hiding underneath a beard. I imagine pets would enjoy this as well. 

For the print, I used 0.08 layer heights to try and ensure a smooth surface, although I imagine you could get away with 0.12 or 0.16 to save some print time, if needed. 

I hope you all enjoy, please let me know if you encounter any issues.