A spinning support guide for a trimmer head assembly includes a semispherical base, a base mount disc, the base mount disc being secured to the semispherical base by one or more flush mount machine screws, one or more spacer discs, each including a central aperture, each of the one or more spacer discs being disposed between the base mount disc and the semispherical base, and a guide fastener embedded within the spinning support guide. Furthermore, the guide fastener is adapted to threadingly attach to a threaded receptacle in an underside of the trimmer head assembly so as to secure the spinning support guide to the trimmer head assembly.