A UPVC drainage bit is a specialized routing bit used in the fabrication of UPVC window and door frames. It is designed to create specific slots or holes for drainage and ventilation. This is critical for preventing water from accumulating inside the frame and causing damage.

Key Features

• T-Slot Shape: The most common type is a T-slot cutter or T-slot routing bit. This unique shape creates a slot with a wider, undercut bottom, which is essential for creating the channels that allow water to exit the window frame.

• Material: They are typically made from High-Speed Steel (HSS) or solid carbide for durability and a clean cut, as UPVC can be a challenging material to route without causing melting or burring.

• Cutting Edges: These bits often have multiple cutting edges (flutes), which helps them cut cleanly and efficiently. The number of flutes can affect the finish and chip clearance.