The CMT Forstner Bit - 45mm is a precision boring tool built from super strength SP steel, designed to drill clean, flat-bottom holes in softwood with repeatable accuracy. With a 10x30mm shank, right-hand rotation, and 2 precision-ground cutting edges paired with 2 scored spurs, this bit is a reliable choice for cabinet makers, woodworkers, and finish carpenters who need accurate plunge cuts for hinge installation, shelf pin drilling, and decorative openings. Whether you are boring pocket holes for hardware or carving arched niches for brackets and frames, the 45mm cutting diameter delivers the controlled, chip-free results that demanding woodworking projects require.

Key Features

• Super Strength SP Steel Construction - long-lasting cutting performance means fewer replacements and consistent results across extended production runs in softwood.
• 2 Precision-Ground Cutting Edges - dual cutting teeth shear wood fibers cleanly at the base of the hole, producing flat-bottom bores with minimal tearout or splintering.
• 2 Ground Spurs (V2) - spurs score the perimeter of the bore ahead of the cutting edges, delivering clean, chip-free hole walls and a crisp entry circle in the workpiece surface.
• 45mm Cutting Diameter with 10x30mm Shank - sized for larger-scale boring tasks like wide hinge mortises, hardware niches, and arched openings, while the 10mm shank fits standard drill chucks securely.
• Right-Hand Rotation (RH) - compatible with all standard right-hand drill presses and handheld drills, making it a drop-in addition to any woodworking setup.
• 3-35/64 in. Total Length - adequate reach for boring through thicker stock or angled cuts without the bit bottoming out in the chuck.
• Capable of Angled and Overlapping Cuts - can create oval openings and arched profiles at any angle, and bore into partially supported material, expanding its versatility beyond simple perpendicular holes.

Why This Product

• For woodworkers who need precise flat-bottom holes for European-style cabinet hinges or shelf hardware, the 45mm diameter and dual precision-ground spurs produce clean, accurate bores that seat hardware flush every time.
• The SP steel material is formulated for long-lasting cutting performance - a practical advantage for production shops or contractors who bore many holes per day and need a bit that holds its edge without frequent resharpening.
• The ability to bore at any angle and create oval or arched openings makes this bit a versatile tool for decorative woodworking tasks - installing brackets, straps, frames, and grids - beyond straightforward vertical drilling.
• At 45mm, this bit covers a common hinge-bore diameter used widely in cabinet and furniture construction, making it a practical everyday tool for softwood joinery and millwork projects.

Specifications

• Manufacturer Part Number: 537.450.31
• Brand: CMT Orange Tools
• Diameter: 45mm
• Total Length: 3-35/64 in.
• Shank: 10x30mm
• Number of Cutting Edges: 2
• Number of Spurs: 2
• Blade Material: Super Strength (SP) Steel
• Rotation: Right-Hand (RH)

Approved Applications

• Drilling precise flat-bottom holes in softwood
• Hinge mortise boring for cabinet and furniture installation
• Shelf pin and hardware pocket drilling
• Creating oval and arched openings at any angle
• Boring niches for the installation of brackets, straps, frames, and grids
• Cabinet hardware installation