As a result of extensive studies and market research, coupled with the vast experience in glass edge treatment, Tenon have developed an automatic horizontal seaming machine (model TWM) with cup grinding wheels. This design is in response to the needs and demands of the market, which experiences difficulties with vertical edging using diamond belts or 'vee' type wheels.

The automatic horizontal seaming machine is used to remove the sharp edges of glass before tempering, by grinding all four sides using four separate individually controlled heads each with four grinding wheels. Corner dubbing is also an option. The TWM horizontal seamer automatically adjusts for different glass sizes and thicknesses, and can be connected directly in line with a horizontal washing machine.