Set of 2 Tapered Tongue and Groove Router Bits - D120 | d30 | B=25 - 50 mm HSS Premium
Set of 2 Tapered Tongue and Groove Router Bits - D120 | d30 | B=25 - 50 mm HSS Premium
SKU:12.10C25-d30
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Set of 2 Tapered Tongue and Groove Router Bits – HSS M2 or T.C.T. Carbide
Set of 2 profiled router bits for creating a tapered tongue and groove joint – the optimal solution for solid wood flooring and countertops where a stronger resistance to lateral traction is required compared to the classic straight joint. The groove profile widens towards the front, the tongue fits into it complementarily, and the board slides horizontally into position and self-locks – it cannot be removed vertically and has no play. The router bit's geometry automatically leaves a 1 mm expansion gap inside the joint, which prevents wood cracking due to variations in humidity and temperature. Available in 4 thickness variants for each material – select the desired variant from the menu.
| Joint Type | Joint TypeTapered Tongue and Groove – the board slides horizontally into position and self-locks against lateral traction (cannot be removed vertically) |
| Thickness Variants | Thickness Variants4 variants available per material – select from menu |
| Outer Diameter (D) | Outer Diameter (D)According to the technical drawing of the chosen variant |
| Bore Diameter (d) | Bore Diameter (d)Ø30 mm standard | Ø35 mm or Ø40 mm on pre-order |
| Cutting Material | Cutting MaterialHSS M2 Premium (6.5% Tungsten, 64–66 HRC) | T.C.T. Carbide (metallic carbide, 85–92 HRC) – select variant |
| Construction Type | Construction TypeBrazed with silver alloy (Ag), resharpenable; re-brazeable if extensively worn |
| Recommended RPM | Recommended RPM6,000 – 9,000 RPM |
| Main Applications | Main ApplicationsSolid wood flooring, solid countertops, artisanal parquet, solid panels |
| Set Configuration | Set Configuration2 router bits (structurally correlated tongue + groove) |
| Package Contents | Package Contents1 x Set (2 router bits), selected variant from the menu |
| Country of Origin | Country of OriginUkraine |
✨ ADVANTAGES OF THE TAPERED JOINT:
- Self-locking against Lateral Traction: the tapered profile causes the board to slide horizontally into position and lock – it cannot be removed vertically and has no play, even without adhesive.
- Integrated Expansion Gap (1 mm): the router bit's geometry automatically leaves a 1 mm gap inside the joint for each board installed – prevents wood cracking due to thermal and hygrometric expansion, without any additional intervention from the installer.
- Firm Installation, No Mandatory Adhesive: the tapered joint allows for dry or glued installation, with the same degree of fixation – an important advantage for floating floors or countertops that need to be able to move with expansion.
- High Durability: the joint withstands repeated stress better than a straight joint – suitable for high-traffic areas.
- 4 Thickness Variants: covers the main range of board thicknesses used in production, without the need for additional sets.
- Long-Term Investment: the inserts can be successively resharpened, and if extensively worn, the router body can be re-brazed.
⚠️ LIMITATIONS IN USE:
- HSS M2 variant: ❌ not recommended for particle board, MDF, HDF or hard exotic wood – for these materials, choose the T.C.T. Carbide variant.
- Carbide variant on soft wood: requires constant feed – stopping rotation on resinous woods can cause localized burning.
🛠️ SELECTION GUIDE: HSS M2 vs. T.C.T. CARBIDE
The choice of material directly influences the finish quality and tool lifespan (swipe left-right on mobile to see the full table):
| Processed Material | HSS M2 Premium (6.5% W) |
T.C.T. Carbide ⭐ (Metallic Carbides) |
|---|---|---|
| Soft Wood (Spruce, Fir, Pine) |
⭐ 100% (No Burns) |
❌ Risk of burning (constant feed mandatory) |
| Hard Wood (Beech, Oak, Ash) |
80% (Efficient) |
⭐ 100% (Durable) |
| MDF / Particle Board / HDF / Plywood | Not Recommended | ⭐ 100% (Optimal) |
| Cutting Edge Hardness | 64 – 66 HRC | 85 – 92 HRC |
| Active Insert Thickness | 6 mm | 3 mm |
💡 Conclusions for purchase:
- Softwood flooring and countertops (spruce, fir, pine)? Choose HSS M2 – immaculate finish, no burns, 6 mm insert with more possible resharpenings.
- Hardwood (oak, beech), particle board or MDF? Choose T.C.T. Carbide – much better resistance to abrasive wear from dense woods and synthetic binders.
- Caution with Carbide on soft wood: requires constant and fast feed – stopping rotation can cause burns on the fiber.
🦺 SAFETY PRECAUTIONS FOR USE:
- Mandatory protective equipment: safety glasses (projected chips), mask or respirator filter (fine wood dust), and earmuffs for prolonged work.
- Beware of hands and fingers: use guides and feed/push devices when processing boards; do not manually guide the workpiece near the router bit.
- Check the fastening of the router bits on the spindle and the full tightening of the nut before starting.
- Observe the recommended RPM (6,000 – 9,000 RPM) to avoid vibrations or damage to the cutting edge.
- Resharpening: we recommend having it done at a specialized center to precisely maintain the tapered angle of the profile – incorrect resharpening alters convergence and compromises joint sealing.
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