E-Sharp News March 2026

Should you perform your tool regrinding in-house?

In-house or third-party? It’s a question manufacturer routinely ask when reviewing production processes. While some activities are obvious candidates for outsourcing such as heat treatment or painting, tool regrinding remains a more complex and strategic decision. In recent years, that decision has become even more critical.

Rising carbide costs are changing the equation

Global carbide prices have increased steadily due to supply constraints, geopolitical pressures and growing demand across manufacturing, energy and defence sectors. In 2025, tungsten carbide prices reached multi-year highs with reported increases of approximately 150% overall, and year-on-year rises as high as ~210% in some markets.

At the same time, manufacturers are facing higher energy costs, longer lead times and pressure to reduce waste and downtime. Together, these factors are forcing shops to reconsider how often tools are replaced and whether maximum value is being extracted from each one. In this environment, regrinding has never made more sense.

Regrinding: Extending tool life, controlling cost

Regrinding or resharpening high-performance cutting tools is a proven, cost-effective and environmentally responsible way to extend tool life. Tool service providers across automotive, aerospace, medical and power generation industries have long relied on regrinding to reduce tooling costs.

A high-quality carbide tool can typically be reground up to three times, while maintaining performance close to that of a new tool. When geometry and coating are restored correctly, tool life after regrinding averages 85–95% of new.

From a cost perspective, regrinding is compelling:
 

• A regrind typically costs 30–40% of a new tool
• Over its lifecycle, a single tool can deliver up to 70% cost savings
• Less carbide is scrapped, reducing exposure to volatile raw material pricing

Beyond carbide itself, regrinding also reduces the need to manufacture entirely new tools – saving energy, grinding wheel wear and processing time compared to full new-tool production.

Why in-house regrinding is gaining momentum

Traditionally, tool and cutter grinders were purchased primarily by cutting tool manufacturers and dedicated regrinding services. However, in-house CNC tool regrinding has become increasingly attractive to manufacturers that consume large volumes of tooling.

While outsourced regrinding services can deliver high-quality results, they also introduce:
 

• Turnaround delays
• Shipping and logistics costs
• Limited flexibility for urgent or non-standard geometries
• The need to carry higher levels of spare tool inventory

For many manufacturers, the real cost is not the regrind itself but lost production when the right tool isn’t available at the right time.

Bringing regrinding in-house allows manufacturers to:
 

• Reduce downtime and waiting periods
• Respond immediately to urgent tooling needs
• Lower inventory requirements
• Maintain greater control over tool quality and availability

Balancing the investment decision

Moving regrinding in-house is a significant step. Beyond the capital investment in a tool and cutter grinder, manufacturers must consider:
 

• Grinding wheels and consumables
• Workholding and coolant systems
• Floor space and utilities
• Operator requirements
• Tool measurement and inspection equipment

The cost of in-house regrinding depends heavily on machine utilisation. To build a sound business case, manufacturers must calculate an hourly machine rate that includes depreciation, maintenance, energy, consumables and labour. This can then be compared against outsourced regrinding costs on a per-tool basis. However, a purely financial comparison is rarely sufficient.

The hidden costs of outsourcing

Once basic cost comparisons are complete, manufacturers should also consider “soft factors” that directly affect productivity:
 

• The cost of spare tools required to maintain production during regrinding
• Outsourced regrinding costs multiplied across multiple spindles
• Turnaround delays and the cost of lost production
• Tool quality and consistency
• Associated processes such as edge preparation and coating
• Shipping and handling costs

In many cases, downtime costs far exceed the price of the tool itself.

ANCA technology is lowering the barrier

Modern CNC tool grinding no longer demands the specialist skill levels it once did, even as cutting tools continue to increase in complexity. ANCA’s advanced automation and software solutions have significantly reduced the traditional labour and expertise barriers associated with tool regrinding.

ANCA offers a range of automated mixed-batch regrinding solutions, including pallet loading, collet loading and RFID-based automation. These systems allow manufacturers to regrind tools efficiently with minimal operator intervention, supporting high-mix production environments without compromising accuracy or reliability.

With ANCA’s RFID-enabled workflows, each tool is digitally linked to its grinding program. Tools can be loaded in any order, automatically identified and reground without manual program selection – making urgent or unplanned regrinds practical, repeatable and error-free.

Consistency through proven ANCA platforms

A key advantage of in-house regrinding with ANCA is process consistency. Regrinds produced on ANCA platforms use the same software, motion control and precision systems that manufacture new tools. This ensures original tool geometry, cutting performance and repeatability are preserved throughout the tool’s lifecycle – not approximated.

ANCA’s collaboration with Zoller further strengthens this capability. Automated measurement and reliable data transfer digitise tool wear and automatically pre-set regrinding parameters. As a result, even mixed batches of tools can be measured, loaded and reground with a high degree of confidence and minimal risk of error.

Sustainability as a strategic driver

Beyond cost and efficiency, regrinding plays a growing role in sustainability. Reusing a single tool multiple times can reduce raw material consumption by up to 80% over its lifecycle – a measurable contribution to sustainability targets without compromising performance.

Each regrind:
 

• Reduces carbide waste
• Lowers energy consumption compared to producing new tools
• Decreases the carbon footprint associated with raw material extraction and processing

There is no universal answer to whether tool regrinding should be outsourced or brought in-house. The decision depends on tooling volume, production mix, utilisation and operational priorities. However, with rising carbide costs, ongoing supply constraints and increasing pressure to reduce downtime and waste, manufacturers can no longer afford to view regrinding as a secondary process.

Modern, automated regrinding solutions allow manufacturers to take control of tooling costs, availability and performance – turning regrinding into a strategic advantage rather than an operational necessity.
 

10 February 2026