Introduction: Why Sharpen Router Bits?

A sharp router bit is essential for clean, accurate cuts in woodworking. Over time, router bits inevitably become dull due to friction and heat generated during use. Using dull bits can lead to several problems, including:

• Tear-out: Splintering and chipping of the wood fibers, resulting in a poor finish.
• Burning: Scorching of the wood due to increased friction and heat.
• Reduced Precision: Inaccurate cuts and difficulty maintaining desired profiles.
• Increased Strain on Router: The router motor has to work harder, potentially shortening its lifespan.
• Safety Hazards: Dull bits are more prone to kickback and other dangerous situations.

Rather than replacing your router bits every time they lose their edge, sharpening and reconditioning offer a cost-effective and environmentally friendly solution. By restoring the cutting edge, you can maintain the performance of your bits and extend their lifespan, saving you money and ensuring high-quality results in your woodworking projects.

Benefits of Router Bit Sharpening and Reconditioning

Investing in router bit sharpening and reconditioning services offers several key advantages:

• Cost Savings: Sharpening is significantly cheaper than buying new router bits. According to General Cutting Tools, sharpening spiral bits can cost 25-50% of the price of new ones. Carbide tipped bits can often be sharpened for less than $10.
• Extended Bit Lifespan: Regular sharpening can significantly prolong the life of your router bits, maximizing your investment.
• Improved Cut Quality: Sharp bits produce cleaner, more accurate cuts, reducing tear-out and burning.
• Enhanced Router Performance: Sharp bits require less effort from the router motor, improving its efficiency and lifespan.
• Safety: Sharp bits are less likely to cause kickback and other dangerous situations.
• Environmental Friendliness: Sharpening reduces the need to manufacture new bits, conserving resources and reducing waste.
• Restoration of Complex Profiles: Professional sharpening services can restore intricate profiles and geometries to their original specifications.

As Ekstrom Carlson points out, with carbide prices increasing, sharpening existing tools is a smart way to save money.

Types of Router Bit Sharpening and Reconditioning Services

Router bit sharpening and reconditioning services can vary depending on the type of bit, the extent of damage, and the capabilities of the service provider. Here are some common services offered:

• Basic Sharpening: This involves grinding the cutting edges of the bit to restore sharpness. It's suitable for bits that are only slightly dull.
• Re-Grinding: This is a more aggressive process that removes more material to reshape the cutting edges. It's used for bits that are more severely damaged or have altered profiles.
• Tip Replacement: For carbide-tipped bits, the carbide tips can be replaced if they are broken or severely worn.
• Re-Coating: Some service providers, like Ekstrom Carlson, offer re-coating services to improve the bit's wear resistance and performance.
• Cleaning and Inspection: Most sharpening services include cleaning the bit to remove resin and debris, as well as inspecting it for damage.
• Balancing: For larger router bits, balancing may be necessary to prevent vibration and ensure smooth operation.
• Specialized Sharpening: Some companies like Vexor, offer sharpening services for specialized tools including compression bits and groovers.

Ekstrom Carlson also offers the design of special carbide tools, including step drills and form milling cutters.

Choosing a Router Bit Sharpening Service

Selecting the right router bit sharpening service is crucial for achieving optimal results. Consider the following factors when making your decision:

• Experience and Expertise: Look for a company with a proven track record and experienced technicians.
• Equipment: Ensure the service provider uses precision grinding equipment to maintain the bit's geometry and tolerances. General Cutting Tools mentions using cutting-edge equipment.
• Types of Bits Serviced: Verify that the service can sharpen the specific types of router bits you use (e.g., carbide-tipped, solid carbide, HSS).
• Turnaround Time: Ask about the typical turnaround time for sharpening services. Vexor has a standard turnaround time of one week.
• Pricing: Compare prices from different providers and inquire about any additional fees (e.g., for tip replacement or re-coating).
• Quality Control: Ask about the quality control measures in place to ensure consistent results.
• Customer Service: Choose a company that is responsive, helpful, and willing to answer your questions.
• Location and Shipping: Consider the location of the service provider and the cost of shipping your bits. Vexor offers pickup and delivery service to the Denver Metro area and surrounding areas.
• ISO Certification: Ekstrom Carlson highlights that their service follows ISO 9001 procedures.
• Replacement Tool Program: Does the company offer new tools if yours are beyond repair? Ekstrom Carlson provides new tools and is a distributor for Ceratizit and KOMET tooling.

By carefully evaluating these factors, you can select a router bit sharpening service that meets your needs and provides high-quality results.

The Router Bit Sharpening Process

Understanding the router bit sharpening process can help you appreciate the skill and precision involved. Here's a general overview of the steps:

1. Inspection: The bit is carefully inspected for damage, such as broken tips, cracks, or excessive wear.
2. Cleaning: Resin, pitch, and other debris are removed from the bit using specialized cleaning solutions.
3. Grinding: The cutting edges are ground using precision grinding equipment, such as CNC grinders. The grinding process is carefully controlled to maintain the bit's original geometry and angles. According to Ekstrom Carlson, they use precision 8 axis CNC tool grinders.
4. Honing: After grinding, the cutting edges may be honed to further refine the sharpness and remove any burrs.
5. Balancing (if necessary): Larger router bits may be balanced to prevent vibration.
6. Coating (if requested): If re-coating is desired, the bit is coated with a wear-resistant material.
7. Final Inspection: The sharpened bit is inspected to ensure it meets quality standards.
8. Protection: Vexor dips the tools for protection after sharpening.

The specific steps and equipment used may vary depending on the type of bit and the service provider.

Important Considerations Before Sharpening

Before sending your router bits for sharpening, keep the following considerations in mind:

• Minimum Sharpening: Only sharpen bits when necessary. Excessive sharpening can shorten the bit's lifespan.
• Bit Condition: Severely damaged bits may not be suitable for sharpening. In some cases, it may be more cost-effective to replace the bit.
• Diameter Reduction: Keep in mind that sharpening removes material from the bit, which can slightly reduce its diameter. General Cutting Tools mentions this specifically.
• Profile Alteration: Aggressive re-grinding can alter the bit's profile, especially on intricately shaped bits. Discuss this with the sharpening service beforehand.
• Cost vs. Replacement: Compare the cost of sharpening with the cost of a new bit. For inexpensive bits, it may be more economical to replace them.
• Shipping Costs: Factor in the cost of shipping your bits to and from the sharpening service.
• Rush Orders: If you need your bits sharpened quickly, inquire about rush order options, which may incur an additional charge. Vexor offers rush jobs at an extra charge.

By carefully considering these factors, you can make informed decisions about when and how to sharpen your router bits.

Cost of Router Bit Sharpening

The cost of router bit sharpening can vary depending on several factors, including:

• Type of Bit: Carbide-tipped bits are typically more expensive to sharpen than HSS bits.
• Size of Bit: Larger bits generally cost more to sharpen.
• Extent of Damage: Severely damaged bits that require more extensive re-grinding will cost more.
• Service Provider: Prices can vary between different sharpening services.
• Additional Services: Services such as tip replacement or re-coating will add to the cost.

While specific pricing data is difficult to generalize without knowing the exact bit and service needed, General Cutting Tools provides some general guidelines:

It's always best to obtain a quote from the sharpening service before sending your bits. Ekstrom Carlson encourages you to contact them for a quick quote.

Frequently Asked Questions