These CMT carbide insert router bits are the best we offer. You’ll never need to replace or sharpen an entire bit again. When the inserts get dull, simply rotate them a quarter turn, tighten them back down, and get right back to work. After routing countless miles of wood, when all four edges of the inserts are dulled, just order a new set of inserts, and you’re back in business. The convenience of carbide insert router bits eliminates the hassle and expense of resharpening.

The cutting edges, or inserts, can be replaced individually when they become dull or damaged, eliminating the need to replace the entire bit and significantly reducing long-term costs. Changing the inserts is quick and easy, minimizing downtime and letting you stay focused on your work.

Unlike brazed bits, which require professional sharpening and can alter the bit’s diameter, insert bits maintain their original profile. This ensures that when you rotate or replace an insert, the bit retains its precise geometry, delivering consistent and accurate cuts throughout its lifespan.

These bits also use high-quality, specialized carbide grades designed specifically for insert applications. This makes the cutting edges more durable and efficient, outperforming the carbide used in brazed bits. Additionally, because the inserts aren’t permanently attached to the tool body, they dissipate heat more effectively. This reduces the risk of thermal damage and premature dulling, keeping the cutting edges sharper for longer.

CMT carbide insert router bits are the ultimate solution for woodworkers who value reliability, efficiency, performance, and long-term cost savings.

CMT Carbide Insert Spoil Board Surfacing Router Bits

 Insert Carbide Spoil board surfacing router bit are ideal for fast removal of material over a large surface area

• The router bit utilizes 4-sided, replaceable solid carbide inserts
• Super-strength steel body, 3 cutting edges.
• Can be used on soft and hard woods, particle board and MDF
• Produces an improved finish at the bottom of the cut
• Very cost effective solution compared to brazed router bits and solid carbide spiral bits

Specifications:  

Standard Indexable Carbide Knives with 4 Cutting Edge

Size: 12mmx 12mm x 1.5mm

Technical Details:
K1920
Hardness (HV10): 1.920
Transverse rupture strength (N/mm2): 2.600
New chrome grade for universal cutting applications.
Excellent resistance to corrosion, oxidation and mechanical wear.
High efficiency, 20% longer lifetime compared to standard grade.