The Trimming Spinner goes on the bottom of a pot or mug while trimming. A finger of the potters left hand rests in the concave center allowing the potter to stabilize the trimming hand while trimming. The wider footprint disperses downward pressure to help prevent a thin-walled piece from collapsing. Thin, foam rubber backing grips the piece. Trimming Spinner is 48 mm (~2”) in diameter with a 6 mm (1/4") hole in the center. Hashmarks provide five options for equidistant divisions. Trimming Spinner XS is 31 mm (~1.25”) in diameter with a 6 mm (1/4") hole in the center. Hashmarks provide seven options for equidistant division. Trimming Spinner XL is 75 mm (~3”) in diameter with a 6 mm (1/4") hole in the center. Hashmarks provide guides every 10 degrees around, with 10 options for equidistant dividers. A post shared by DiamondCore Tools (@diamondcoretools) on Mar 17, 2018 at 8:05am PDT