CMT Plywood Straight Bits - for 1/4, 1/2, & 3/4 in. Plywood

CMT 3-Piece Plywood Groove Router Bit Set – 1/2 in. Shank

The CMT 3-Piece Plywood Groove Set is specifically engineered for routing grooves and dadoes in plywood, helping you create tight, accurate joints without the gaps and sloppiness that can occur when using standard router bits. Each bit is precisely sized to match the actual thickness of common plywood panels.

The set includes three groove bits sized for popular plywood thicknesses:

• 23/32 in. Router Bit – designed for 3/4 in. plywood
• 31/64 in. Router Bit – designed for 1/2 in. plywood
• 15/64 in. Router Bit – designed for 1/4 in. plywood

By matching the true thickness of plywood, these bits help produce clean, precise-fitting grooves and dadoes for shelves, cabinet components, furniture, boxes, and other woodworking projects. No gaps. No sloppy joints. No worries.

Designed for Accurate Plywood Joinery

Unlike nominal plywood dimensions, the actual thickness of plywood can vary from its stated size. CMT sizes these groove bits specifically around the true thickness of common plywood, allowing woodworkers to create more precise joints and improve the fit of assembled components.

CMT Quality Manufacturing

CMT applies advanced manufacturing techniques and carefully selected materials to produce router bits engineered for accuracy, durability, and reliable cutting performance.

• Precision Turning, Milling and Cutting
  CMT has made significant investments in modern production technology. Fully automated CNC machinery, operated by specially trained personnel, helps ensure router-bit shanks and bodies are manufactured with exceptional accuracy and balance.
• Heat-Forged Steel Bodies
  Larger-diameter bits may undergo a heat-forging process before their steel bodies are precision machined. This creates a radial grain orientation that provides additional strength and durability where it is needed.
• Advanced Brazing Technology
  CMT uses custom-designed computerized brazing equipment to provide consistent, reliable bonds between steel bodies and carbide cutting edges. Its silver-copper-silver brazing construction helps create a strong bond while providing a shock-absorbing effect that helps protect carbide during demanding cuts.
• Application-Specific Carbide
  CMT formulates carbide grades for specific woodworking applications. Carbide compositions are selected to balance hardness, cutting performance, durability, and impact resistance according to the demands of each tool.
• Precision Grinding and Sharpening
  Final grinding and sharpening are performed on multi-axis CNC machinery. Each cutting bevel and angle is precisely finished to specification to help deliver accurate cuts, long service life, and a clean finished surface.

Safety Tips

• Always wear appropriate eye protection when operating a router.
• Wear a properly rated dust mask or respirator when routing wood and plywood.
• Never use router bits that are damaged, cracked, or excessively worn.
• Operate the router at the manufacturer's recommended speed and feed rate.
• Do not force the router bit through the material.
• Use particular care when making the initial cut with a small-diameter bit.
• For best results with small-diameter bits, make deeper cuts using multiple passes rather than attempting to remove all material in a single pass.

Product Features

• 3-piece set designed specifically for plywood grooves and dadoes
• 1/2 in. shanks for compatibility with routers equipped with 1/2 in. collets
• Includes 23/32 in., 31/64 in., and 15/64 in. groove bits
• Designed for 3/4 in., 1/2 in., and 1/4 in. plywood applications
• Helps produce tight, accurate plywood joints
• Precision-manufactured for dependable woodworking performance

Ideal Applications

Use the CMT 3-Piece Plywood Groove Set for cabinetmaking, shelving, furniture construction, woodworking joinery, dadoes, grooves, and other projects where accurately sized plywood joints are essential.