In the glass industry, the term "grinding" encompasses a very broad range of processes and is one of the most frequently misunderstood terms when ordering. A customer says "I want a ground finish," but the manufacturer does a smooth ground finish, while the customer expects a polished edge. This article clarifies the terminology.<\/p>\n
Grinding is the process of smoothing the sharp, micro-cracked edges of glass that form after cutting, using abrasive stones to make them smooth, safe, and durable. The purpose can be summarized in three main points: security<\/strong> (removal of sharpness), durability<\/strong> (repair of microcracks) and aesthetic<\/strong> (for products where the edge will remain visible).<\/p>\n The most basic process. Only the sharpness of the edge is removed; the edge is still matte and not perfectly smooth. The aim is safety and fracture resistance, not aesthetics.<\/p>\n Where it is used:<\/strong> Insulating glass units and tempering lines. Nothing more is needed as the edge will not be visible. This is what happens to the glass going into tempering. minimum<\/em> It is a necessity.<\/p>\n The edge is smoothed to a flat surface. A vertical, smooth band forms along the thickness of the glass. The edge remains matte (frosted appearance).<\/p>\n Where it is used:<\/strong> Shelf glass, door glass, applications where the edge is within the frame but high-quality workmanship is expected.<\/p>\n After a simple grinding process, the edge is polished with progressively finer-grained stones. The edge becomes transparent and shiny, taking on the same appearance as glass itself.<\/p>\n Where it is used:<\/strong> Shower enclosures, table glass, display cases, glass railings \u2014 anywhere the edge is directly visible.<\/p>\n The edge is not straight, but processed in a semi-circular cross-section. When viewed from the side, the edge is rounded.<\/p>\n Where it is used:<\/strong> Table glass, coffee table glass, furniture glass. It provides both aesthetics and touch safety.<\/p>\n A specific angle or profile is given to the edge. Beveling is the most common example: the edge is carved at an angle such as 45\u00b0 to create a decorative surface that refracts light.<\/p>\n Where it is used:<\/strong> Mirrors, decorative glass, classic furniture.<\/p>\n Not the edge, corner<\/strong> This is the process. Sharp edges are broken off or rounded to a specific radius. It reduces the risk of injury during handling and prevents breakage starting from the corner.<\/p>\nTypes of break-in\/wash-in<\/h2>\n
Deburring (seaming \/ arrissing)<\/h3>\n
Straight break-in<\/h3>\n
Bright polishing<\/h3>\n
C-shaped edge (semi-circle \/ pencil edge)<\/h3>\n
Profile grinding (beveling \/ shaped edge)<\/h3>\n
Corner break and radius<\/h3>\n
Which one do I need? Decision table<\/h2>\n