Z-axis Adjustment Knob Mod for CR-10 and other printers with Z-thread

My CR-10 has no built in option to raise or lower the z-axis so I've made this attachement that greatly improves the experience. You need to raise the coupler about 1 cm on the z-axis where it's attached to the stepper motor so you can stick this on the top. You may need to glue this into place, but for me it works as is.