CMT Forstner Bit 30mm is a precision boring tool engineered for drilling clean, flat-bottom holes in softwood. Built from super strength SP steel, this right-hand rotation bit delivers long-lasting cutting performance for woodworking tasks that demand accuracy - from hinge mortising and shelf pin boring to creating arched or oval openings at virtually any angle. The 30mm cutting diameter and 8mm shank make it a versatile choice for cabinetmakers, finish carpenters, and hobbyists who need repeatable, precise results in natural wood materials.

Key Features

• Super Strength SP Steel Construction - resists wear during repeated cuts, delivering long-lasting cutting performance that holds up through demanding softwood drilling tasks.
• 2 Precision-Ground Cutting Edges - slice cleanly through softwood grain to produce flat, smooth hole bottoms with minimal tearout, reducing sanding and finishing time.
• 2 Ground Spurs - score the wood fibers ahead of the main cutting edges, creating crisp, chip-free bore walls and a clean entry circle for a professional result.
• Right-Hand Rotation (RH) - compatible with standard drill presses and handheld drills, so no special tooling or reverse-rotation setup is required.
• 30mm Cutting Diameter with 8x30mm Shank - sized for common chuck capacities, making this bit easy to seat securely in a drill press or handheld drill without adapters.
• Flat-Bottom Hole Geometry - enables precise recessing for hinges, hardware, and brackets where a through-hole or tapered bit would leave an unusable cavity.
• Versatile Angle Capability - designed to bore at any angle into workpieces, allowing you to create arched openings, oval cutouts, and angled niches that would be impossible with a standard twist bit.

Why This Product

• When hinge installation, shelf pin placement, or hardware mounting requires a perfectly flat hole bottom, this Forstner bit delivers the recessed geometry that twist bits and spade bits simply cannot produce.
• The SP steel construction is specifically chosen for sustained cutting performance, meaning the bit stays sharp longer through repeated softwood boring operations rather than dulling quickly on production runs.
• At 30mm diameter, this bit targets one of the most common sizes needed for European-style cabinet hinge cups and similar hardware, reducing the need to reach for a separate tool mid-project.
• The ability to drill at any angle - including into curved or arched workpiece faces - makes this bit a practical choice for furniture making, niche creation, and decorative frame work where square entry is not always possible.

Specifications

• Manufacturer Part Number: 537.300.31
• Brand: CMT Orange Tools
• Product Type: Forstner Bit
• Diameter: 30mm
• Total Length: 3-35/64"
• Shank: 8x30mm
• 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 mortising and hinge cup installation
• Shelf pin and hardware mounting hole boring
• Installing brackets, straps, frames, and grids in recessed niches
• Creating oval and arched openings at any angle
• Cabinet and furniture woodworking joinery