A lapidary slab saw is used to make accurate cross-section cuts through large and heavy pieces of semi-precious material, mineral specimens, core samples, glass, and other non-metallic material.
Here's the CEO of Highland Park Lapidary Company, John Rowland where he talks about 3 Hacks that will definitely help you with your slab saw.
1. How to Change Roller Bearings on your Highland Park Slab saw
2. Fixing a broken switch on a slab saw
3. How to NOT break your Slab saw vise