I have searched high and low for some sort of wet/dry sanding/polishing tool that I can use on these handles. Hand sanding is very time consuming. The handles range in size from 5" long x 1-1/4" wide x 3/4" thick down to smaller pieces. As you can imagine, a 4" wet grinder would eat the ends off my fingers since I have to hold the piece in my hand while sanding it. Since most of the handles have multiple contours, I need something small and flexible. Some sort of bench grinder set-up would be ideal but I haven't found anything like that.
Other than lithic rock, I am pretty much in the dark about working stone (and this is all cultured marble anyway). I am not interested in attaining a commercial shine on the knife handles but I do want then to be smooth and have a nice luster. Are you aware of any method I can use to polish these knife handles? And if so, a source for the materials?