Router Bit STANLEY STA66025 plunge/mortising 8 mm cutting diameter, 50 x 1.5 mm shank/length

STANLEY STA66025 router/mortising bit with an 8 mm cutting diameter and a straight profile designed for creating slots, grooves and mortises in solid wood and wood-based materials. The bit has a 50 x 1.5 mm shaft/length configuration suitable for use with plunge routers and handheld routers where precise cutting depth and clean edge finish are required. It is intended for joinery, cabinetry and general woodworking operations that demand repeatable, straight cuts.

Advantages

The solid construction of this STANLEY router bit provides stability during plunge and through cuts, reducing chatter and ensuring a consistent slot width. The 8 mm cutting diameter offers a balance between material removal rate and control, while the straight profile yields clean, squared edges suitable for tight-fitting joints. Its compatibility with common router collet sizes and a 50 mm effective length allow for deeper mortising when compared to shorter bits.

Suitable for

• Cutting straight slots and grooves in hardwoods and softwoods
• Making mortises for hinges, bolts and connectors in cabinet and door work
• Creating dados and housing joints for furniture construction
• Trimming and shaping wood panels, laminates and MDF for joinery

Key specifications

• Cutting diameter: 8 mm
• Shank/length: 50 x 1.5 mm
• Profile: straight / plunge/mortising style
• Material compatibility: solid wood, plywood, MDF, chipboard, laminated panels
• Intended use: plunge and handheld routers for slotting and mortising

How to use

Secure the bit in the router collet to the recommended depth and ensure the collet clamp is tightened. Set the router speed appropriate for the material—lower speeds for hard and laminated materials, higher speeds for softwoods—then make incremental passes to reach the required cut depth rather than removing too much material at once. Use a guide, fence or template for straight, repeatable cuts and always feed the router against the rotation of the bit for controlled material removal. Allow the bit to clear chips frequently to maintain cutting performance and edge quality.

Usage recommendations

Use appropriate personal protective equipment (safety glasses, hearing protection and dust extraction) and ensure the router is switched off when changing the bit. For best results on furniture and cabinet joinery, make trial cuts in scrap material to confirm depth and fit before machining final workpieces.