Demonstration & Lecture on safe and effective use of a traditional flatbed grinder to shape flat surfaces on glass. We show how to prepare loose silicon carbide grit and water to make an appropriately damp mixture that will provide consistent grit flow during the grinding process. Shows how to square up sides of an object using the natural grinding properties of the wheel, where the leading edge grinds more. How to keep a surface true once it's square/strait by setting up an efficient grinding/turning pattern. Also shows how to protect corners and edges by beveling the glass and tracking progress using a permanent marker.