CMT Forstner Bit - 3/4" Diameter, 3/8" Shank, Right-Hand Rotation is a precision boring tool engineered for drilling clean, flat-bottom holes in softwood. Designed for woodworkers who need accurate, repeatable results when installing hinges, shelf pins, and cabinet hardware, this bit uses a standard rim design with a precision-balanced centre point and 2 ground spurs to score the wood cleanly before the main cutting edges engage. The result is a smooth bore wall and a flat bottom - ideal for creating arched openings, oval cutouts at any angle, and hardware installation pockets where surface quality matters.

Key Features

• Precision-Balanced Centre Point - keeps the bit exactly on target during plunge entry, reducing wander and producing repeatable flat-bottom holes with consistent placement across a project.
• 2 Ground Spurs (V2) - score the perimeter of the bore ahead of the cutting edges, separating wood fibers cleanly and preventing tearout at the rim of the hole for professional-quality results in softwood.
• Standard Rim Design - provides superior lateral guidance during the cut, keeping the bore perfectly cylindrical, making this geometry the preferred choice for smaller diameter bits like this 3/4" size.
• Super Strength (SP) Steel Construction - delivers edge retention and durability through repeated drilling cycles, maintaining cutting performance in natural softwood without frequent resharpening.
• 3/8" x 30mm Shank - fits standard drill press chucks and handheld drill chucks, offering a secure, slip-free grip during deep plunge cuts.
• Right-Hand (RH) Rotation - compatible with all standard right-hand drill presses and handheld drills, no special tooling or reverse-rotation setup required.
• 90mm (3-35/64") Overall Length - provides adequate reach for typical hinge pocket and shelf pin depths without excessive overhang that could introduce vibration.

Why This Product

• The 3/4" diameter is one of the most common sizes for hinge cup boring and hardware installation in cabinetry and furniture - this bit addresses that need directly with a geometry purpose-built for flat-bottom hole accuracy.
• The combination of a precision-balanced centre point and 2 ground spurs means the bit self-locates on a marked center and scores cleanly around the perimeter before material removal begins - reducing setup time and the risk of splintering on finished softwood surfaces.
• The standard rim on this 3/4" size delivers better lateral guidance than a toothed rim would at this diameter - CMT applies toothed rims only on larger sizes (25mm and above) where heat buildup becomes a concern, so this bit is correctly specified for its size range.
• Super Strength SP steel construction means the cutting edges hold up through production use in softwood without frequent trips to the sharpener - reducing downtime and maintaining consistent hole quality across repeated operations.

Specifications

• Manufacturer Part Number: 537.190.31
• Brand: CMT Orange Tools
• Bit Type: Forstner Bit
• Diameter: 3/4"
• Total Length: 3-35/64" (90mm)
• Shank: 3/8 x 30mm
• Number of Spurs: 2
• Number of Cutting Edges: 2
• Rim Type: Standard Rim
• Blade Material: Super Strength (SP) Steel
• Rotation: Right-Hand (RH)

Approved Applications

• Drilling precise flat-bottom holes in natural softwood
• Hinge cup boring and hinge installation
• Shelf pin and hardware pocket drilling
• Cabinet hardware installation
• Creating oval and arched openings at any angle