Diamond Straight Router Bit Dedra 20 mm M14 shank

Diamond straight router bit Dedra 20 mm M14 shank is a diamond-coated straight cutting tool for use in handheld grinders and rotary tools with an M14 threaded connection. With a 20 mm cutting diameter and a straight profile, this bit is intended for precision cutting, trimming and shaping of hard materials where enhanced wear resistance and cutting life are required. The M14 shank enables secure mounting in compatible angle grinders and some rotary tool adapters, allowing tasks such as profiling, edge finishing and controlled material removal.

Advantages

The diamond coating provides long service life and consistent cutting performance on abrasive and hard surfaces. The straight profile ensures predictable cuts and uniform contact along the workpiece edge. The M14 threaded shank gives a robust mechanical connection to common handheld grinders and compatible rotary devices, reducing slippage under load. The 20 mm cutting diameter offers a balance between removal rate and control for both coarse shaping and fine trimming operations.

Suitable for

• Profiling and edge finishing of stone, ceramics and hard composites
• Trimming and shaping of concrete and cement-based materials
• Controlled material removal on glass and glazed surfaces (with appropriate coolant and low speed)
• Creating straight grooves or rabbets in hard substrates

Key specifications

• Cutting diameter: 20 mm
• Tool profile: straight
• Coating: diamond abrasive layer
• Shank type: threaded M14
• Typical applications: cutting, trimming, profiling, material removal on hard materials

How to use

Install the bit into a compatible grinder or rotary tool with an M14 connection and ensure the bit is tightened securely according to the tool manufacturer's instructions. Use appropriate personal protective equipment including eye protection, gloves and respiratory protection when cutting dust-generating materials. Operate at moderate feed rates and avoid excessive lateral pressure to preserve the diamond layer. For brittle or heat-sensitive materials, apply a steady flow of coolant or water and work at reduced speed to minimize chipping and thermal damage. Allow the tool to cool periodically during extended use.

Usage recommendations

Match cutting speed and feed to the material hardness; start with lower speed and light passes to establish control, then increase feed if needed. Maintain proper coolant when working with glass, ceramics or concrete to extend tool life and reduce dust. Inspect the diamond layer regularly for wear and replace the bit when performance declines or the coating is compromised.