Product Description
CMT Forstner Bit - 1" Diameter, 3/8" Shank, Right-Hand is engineered for drilling precise, flat-bottom holes in softwood, giving woodworkers and cabinetmakers clean, accurate results whether installing hinges, fitting shelf pins, or creating arched and oval openings at any angle. Built from super-strength SP steel with a precision-balanced centre point, this 1" boring bit delivers the controlled plunge performance that demanding joinery and cabinet hardware installation requires.
Key Features
- Toothed Rim Design (>=25mm diameters) - prevents overheating during extended cuts at this 1" diameter, so you get cleaner holes and longer bit life compared to standard rim designs that tend to overheat at larger sizes.
- Precision-Balanced Centre Point - keeps the bit locked on your mark from the moment contact is made, eliminating walk and delivering repeatable, on-centre flat-bottom holes every time.
- 2 Precision-Ground Spurs (V2) - score the wood fibre cleanly ahead of the main cutting edges, producing crisp, chip-free bore walls with smooth sides that are ready for hardware installation without additional cleanup.
- Super Strength SP Steel Construction - provides the durability and edge retention needed for repetitive drilling in softwood, keeping the bit sharp through production-level use.
- 3/8" x 30mm Shank - compatible with standard drill presses and handheld drills, giving you flexibility across job-site and shop setups without requiring specialty tooling.
- Right-Hand (RH) Rotation - matches the standard rotation direction of virtually all drill presses and cordless or corded handheld drills, so the bit mounts and cuts without any special setup.
- 90mm (3 35/64") Overall Length - provides enough clearance for deep flat-bottom holes and angled oval openings while remaining manageable in a handheld drill.
Why This Product
- The toothed rim on this 1" diameter bit directly addresses the overheating problem that plagues standard-rim Forstner bits at larger diameters - making it the practical choice for hinge drilling and repeated hardware boring in softwood without scorching the workpiece.
- The precision-balanced centre point combined with 2 ground spurs means you can drill flat-bottom holes and angled openings with accuracy that is difficult to achieve using spade bits or hole saws, which tend to wander and leave rough walls.
- At 1" diameter with a 3/8" shank, this bit fits the tooling most woodworkers and cabinet installers already own - no need for a 1/2" chuck or specialty adapter for standard hinge-cup and shelf-pin work.
- Super-strength SP steel construction and CMT's precision grinding mean the cutting edges hold up through production quantities of flat-bottom holes, reducing re-sharpening frequency during cabinet runs or millwork projects.
Specifications
- Manufacturer Part Number: 537.254.31
- Brand: CMT Orange Tools
- Diameter: 1"
- Total Length: 3 35/64" (90mm)
- Shank: 3/8 x 30mm
- Number of Spurs: 2
- Number of Teeth: 2
- Rim Type: Toothed rim (>=25mm - prevents overheating)
- Material: Super Strength (SP) Steel
- Rotation: Right-Hand (RH)
Approved Applications
- Drilling precise flat-bottom holes in softwood
- Hinge installation - cup hinges and European-style hardware
- Shelf pin and hardware boring
- Creating oval and arched openings at any angle
- Cabinet hardware installation
Frequently Asked Questions
Why does this 1" Forstner bit use a toothed rim instead of a standard rim?
Standard rims provide better guidance but tend to overheat. CMT's design specifies a toothed rim for all diameters of 25mm and larger - which includes this 1" (approximately 25.4mm) bit - to overcome that heat buildup during deeper or repeated flat-bottom drilling in softwood.
What shank size does this Forstner bit use, and will it fit my drill?
This bit uses a 3/8" x 30mm shank. It is compatible with drill presses and handheld drills (both corded and cordless) equipped with a 3/8" or larger chuck. Always confirm your drill's chuck capacity before mounting.
Can this bit drill at an angle to create oval or arched openings?
Yes. The precision-balanced centre point and 2-spur cutting geometry allow the bit to bore into softwood at an angle, enabling oval and arched opening shapes. This makes it useful for decorative woodworking and millwork applications beyond standard perpendicular flat-bottom holes.
Is this bit suitable for hardwood as well as softwood?
The source specifications list softwood as the confirmed compatible material for this bit. While the SP steel construction is durable, always match the bit to the application listed in the product data to get the best results and longest edge life.
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