TM680 Knurled Knob

Recently purchased a gamakay lk67 (rebrand of the TM680 or TOM680) and didn't like the standard knob on it and wanted to make a knurled version to make it somewhat easier to use, and wanted one I could print to match the theme of my keycaps. The stock knob wasnt the easiest to turn becuase of the grooves and how narrow the top was.