150mmx 1/2" Phenolic Star Cab Grooved Polishing Grinding Laps

The 150mm x 1/2" Phenolic Star Cab Polishing Grinding Laps for exceptional cabochon finishes.you described are a high-quality, specialized  tool widely used by commercial cutters, particularly for polishing and final  shaping  of gemstones like sapphire, ruby, and garnet. These laps are not designed for faceting, but for cabochon (rounded or shaped stone) work, offering precise and efficient results. 

• Material: Made from hard fiber phenolic, these laps are known for their durability and ability to retain diamond compounds efficiently.

• Grooved Design: The special grooved surface enhances the polishing  process, improving the effectiveness of the diamond charge and allowing for better shaping.

• Thickness and Precision: The laps are 10mm (7/16") thick, and they are ground flat and parallel to stringent standards, ensuring consistent and even results during polishing.

• Size: The laps are 150mm in diameter, with a 12.5mm (1/2") center  hole, which makes them compatible with many polishing machines.

• Application: They are specifically designed for final shaping  and  polishing of stones like sapphire, ruby, and garnet, which are harder materials that require specialized tools to achieve a smooth, reflective  finish.