Drop a slab of bluestone. It will break it into big chunks, which you can use for a walkway through a garden.
Use the wet saw to cut the pieces you need for the edges of the walkway.
Use the 4.5-inch grinder to cut curved lines in the bluestone. The smaller blade makes cutting on a curve much simpler. The grinder also is much more portable than the wet saw. Curved cuts help you make bends in the walkway or sidewalk.