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Rennie Tool Company Router Cutter Bit Review: Precise routing for joinery

Rennie Tools - 3mm Cutting Diameter x 15mm Flute x 1/4" Shank TCT Tipped 2 Flute Straight Router Cutter Bit Compatible With Makita Bosch Trend Katsu Dewalt Router Etc. 3mm Router Bit
4.7
[1/4-inch Shank Compatibility]  Fits any router collet accepting 1/4-inch shanks, including DeWalt, Makita, Bosch, Trend, Katsu.
[Tungsten Carbide Tips]  TCT cutting edges deliver long-lasting sharpness and clean, precise cuts.
[Hardened Steel Shank]  Robust construction ensures durability, stability, and reliable routing performance.
[Precision Ground Finish]  Dimensionally accurate edges produce smooth, professional-quality grooves, rebates, and trims.
[Versatile Wood Cutting]  Ideal for plywood, MDF, hardwoods, softwoods, birch, ash, oak; works with handheld and CNC.
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The router cutter bit is designed for general routing, grooving and edge trimming and delivers repeatable clean cuts. Woodworkers and cabinet makers will appreciate how Rennie Tool Company Router Cutter Bit helps preserve edge finish and accuracy. A practical choice for workshop and CNC use, but will the shank size suit every job?

⚡ At a Glance
  • Cutting Quality: Consistent, clean cuts suitable for joinery and detailed edge work
  • Best for: Woodworkers, cabinet makers and DIYers needing accurate grooves and rebates
  • Not ideal for: Tasks involving metal, masonry or very aggressive stock removal

A 2-flute straight cutter designed for general routing, grooving, rebating and edge trimming. Compatible across major handheld routers and suitable for CNC use.


Clean, accurate edges, with tungsten carbide tipped cutting edges

Tungsten carbide tipped cutting edges are brazed to a hardened steel shank and precision ground for dimensional accuracy, maintaining a sharp edge through repeated use. The 2-flute straight geometry keeps the cut profile stable while clearing chips efficiently.

Cleaner profiles and reduced tear-out when working with plywood, MDF and solid woods, resulting in fewer sanding passes and neater joins.

Quick machine changes, with a standard 1/4 inch shank

A 1/4 inch shank fits standard collets used by most handheld routers and many CNC router spindles, allowing straightforward tool changes. The shank is made from hardened steel to resist bending under typical routing loads.

Rapid swapping between handheld routers and CNC machines keeps workshop workflows moving and reduces setup time between jobs.

Versatile routing across wood types, with a 2-flute straight profile

Two flutes balance surface finish and chip evacuation, suitable for a wide range of timber species and sheet materials. Compatibility is specified for plywood, MDF, hard and soft woods including ash, oak and birch ply.

Suitable for grooving, rebating, dados and edge trimming across common workshop materials, making it a flexible choice for general routing tasks.

✨ The 4 Key Reasons for Rennie Tool Company Router Cutter Bit
  1. Tungsten carbide tips - Stay sharp longer, improving edge finish and longevity
  2. 1/4 inch shank - Fit standard collets for quick changes across routers and CNCs
  3. Precision-ground flutes - Deliver consistent groove widths and reduced tear-out on plywood
  4. Trade-quality manufacturing - Suitable for repeated workshop use and both hand and CNC routing
📋 Technical Details at a Glance
  • Category: Router cutter bit
  • Cutting diameter: 3mm
  • Flute length: 15mm
  • Shank: 1/4 inch
  • Tip material: Tungsten carbide tipped (TCT)
❓ Frequently Asked Questions

Q: Which routers are compatible?

A: Has a 1/4 inch shank and fits handheld routers and CNC spindles that accept a 1/4 inch collet; compatibility is noted with Dewalt, Makita, Katsu, Bosch and Trend.

Q: What materials can it cut?

A: Suitable for a wide range of wood-based materials, including plywood, MDF, hard and soft woods such as ash, oak and birch ply.

Q: Can it be used in a CNC router?

A: Yes, trade quality construction and the 1/4 inch shank make it suitable for both handheld and CNC router machines.

🏆 Our Verdict

Well suited to carpenters, cabinet makers and serious hobbyists who need repeatable grooves, rebates and clean edge trimming. Precision-ground flutes combined with carbide tips and a standard 1/4 inch shank deliver reliable cuts and easy compatibility with common routers. A durable, workshop-ready option that represents solid long-term value for frequent routing tasks.