CMT Solid Carbide V-Grooving Bit - 90 deg. - 1/4 in. Diameter x 5/16 in. Cutting Height - 1/4 in. Shank is a precision-ground routing bit engineered for clean, accurate V-groove cuts in a wide range of materials. Built from solid carbide (HWM) with a right-hand rotation and a 2-flute design, this bit delivers the cutting performance needed for sign making, decorative lettering, panel work, chamfering, and engraving. The 90 deg. included angle and compact 1 1/2 in. total length make it a versatile choice for both handheld router and router table use, as well as CNC routing applications where repeatable precision matters most.

Key Features

• Solid Carbide (HWM) Construction - the entire bit body is machined from hard metal carbide, delivering greater rigidity and edge retention compared to carbide-tipped designs, which means longer cutting life and more consistent groove quality over repeated use.
• 90 deg. V-Groove Geometry - the precise 90 deg. included angle produces clean, symmetrical V-shaped channels ideal for sign lettering, panel chamfering, and decorative grooves, with no secondary cleanup required on properly set cuts.
• Double Cutting Edge (2 Flutes) - two cutting edges share the workload on every pass, reducing heat buildup and producing a smoother groove finish on wood, MDF, plywood, melamine, laminates, and similar materials.
• 1/4 in. Shank Diameter - fits standard 1/4 in. router collets found on the vast majority of handheld routers, router tables, and entry-level CNC machines, making this bit immediately compatible with existing setups without adapters.
• Compact 1 1/2 in. Total Length - the shorter overall profile reduces vibration and improves stability during cuts, which translates to cleaner groove walls and reduced chatter marks on finished workpieces.
• Right-Hand Rotation (RH) - designed for standard right-hand router spindle direction, ensuring correct chip evacuation and consistent cutting action without the risk of reverse-rotation issues.
• 5/16 in. Cutting Height with 1/8 in. I1 Cutting Height - these dimensions define the usable cutting depth and groove profile, giving woodworkers precise control over groove depth for chamfering edges or routing decorative V-channels to exact depth specifications.

Why This Product

• For sign makers and engravers routing lettering into panels or drawer fronts, the 90 deg. solid carbide V-groove profile produces sharp, clean characters without tearing or chipping - a direct result of the 2-flute HWM carbide construction.
• The 1/4 in. shank makes this bit compatible with virtually any standard router collet, eliminating the need for a separate collet adapter and letting woodworkers get straight to work on handheld routers, router tables, or CNC machines.
• Solid carbide construction throughout the entire bit body - rather than brazed carbide tips - means the cutting geometry stays true longer under the friction and heat generated by dense materials like MDF, chipboard, and laminates.
• With a 5/16 in. cutting height and a precisely ground 90 deg. angle, this bit handles both shallow decorative chamfers and deeper V-groove channels in a single tool, reducing the need to swap bits mid-project when working on panels or plasterboard.

Specifications

• Manufacturer Part Number: 815.064.11
• Brand: CMT Orange Tools
• Cutting Angle: 90 deg.
• Diameter: 1/4 in.
• Cutting Height: 5/16 in.
• Cutting Height (I1): 1/8 in.
• Total Length: 1 1/2 in.
• Shank Diameter: 1/4 in.
• Number of Teeth: 2
• Blade Material: Solid Carbide (HWM)
• Rotation: Right-Hand (RH)
• Bit Type: V-Grooving

Approved Applications

• V-groove routing in panels and drawer fronts
• Sign making and decorative lettering
• Chamfering edges on solid wood, plywood, and sheet goods
• Engraving and decorative groove work
• Routing plasterboard panels
• CNC routing of repeatable V-groove patterns