Melin Tool Company

Drilling difficult-to-machine materials—such as those commonly used in aerospace and automotive components—often presents major challenges, including short tool life, frequent tool changes, and high overall machining costs.

This article introduces Melin Tool Company’s carbide drills and explains how their technologies address these challenges in demanding cutting environments.

Recommended
Applications for
Melin Tool Company

Melin Tool’s carbide drills are ideal for production lines where downtime is unacceptable — such as in automotive part manufacturing — as well as for applications where material costs are high and even minor defects are intolerable, including aerospace and medical components.

Their proprietary high-performance coatings maximize tool life and reduce replacement frequency.
By minimizing not only tool costs but also hidden expenses such as machine downtime and material waste, Melin Tool drills help lower the total cost per part and enhance manufacturing efficiency.

Note: Performance may vary depending on tool type, cutting speed, feed rate, coolant type, and machine rigidity.

Key Products from
Melin Tool Company

MAL3 Series

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Overview

The MAL3 Series is a solid carbide drill designed specifically for machining non-ferrous metals such as aluminum and copper, which tend to be ductile and prone to chip adhesion.

In aluminum machining, heat generated by friction can cause molten chips to adhere to the cutting edge — a problem known as built-up edge or welding.
The MAL3 Series addresses this with a three-flute design that enhances chip evacuation, and a smooth ZrN coating that minimizes friction and adhesion.
These features work together to prevent chip clogging and ensure stable, consistent machining performance.

Compatible Materials

Not specified on the official website

Lineup

Not specified on the official website

MTi4 Series

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Overview

The MTi4 Series is a high-performance carbide drill designed for difficult-to-machine materials such as titanium and stainless steel, which have low thermal conductivity and tend to retain cutting heat.

These materials typically concentrate heat at the cutting edge, accelerating tool wear.
The MTi Series combats this with a specialized nACRo® coating that maintains hardness even at temperatures approaching 1,000°C.
When combined with a 135° point angle that moderates cutting entry, this design effectively controls thermal damage and significantly extends tool life.

Compatible Materials

• Stainless steel
• Hard-to-cut materials

Lineup (diameter)

• 3.175mm（approx. 0.125inch）
• 4.763mm（approx. 0.188inch）
• 6.35mm（approx. 0.250inch）
• 7.938mm（approx. 0.313inch）
• 9.525mm（approx. 0.375inch）
• 12.7mm（approx. 0.500inch）
• 15.875mm（approx. 0.625inch）
• 19.05mm（approx. 0.750inch）
• 25.4mm（approx. 1.000inch）

*Source: [PDF] AWS Official Website
（https://s3.us-east-2.amazonaws.com/assets.endmill.com/catalogs/Melin_Series_Ultra_High_Performance_2019.pdf）

VXMG3T Series

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Overview

The VXMG3T Series is a solid carbide drill designed for shops that handle a wide variety of difficult-to-machine materials, including stainless steels, heat-resistant alloys, and tool steels.

It features a variable helix and unequal flute spacing, which help suppress chatter and vibration during cutting.
Since it is not optimized for any single material, the VXMG3T Series delivers stable, consistent performance across a wide range of workpiece types — ideal for environments with frequent setup changes or mixed-material production.

Compatible Materials

• Steel
• Stainless steel
• Hard-to-cut materials

Lineup (diameter)

• 0.787mm（approx. 0.031inch）
• 1.194mm（approx. 0.047inch）
• 1.397mm（approx. 0.055inch）
• 1.575mm（approx. 0.062inch）
• 1.981mm（approx. 0.078inch）
• 2.362mm（approx. 0.093inch）

*Source: [PDF] AWS Official Website
（https://s3.us-east-2.amazonaws.com/assets.endmill.com/catalogs/Melin_Micro_Catalog_2018.pdf）

For more detailed technical information and product comparisons, visit our special feature on carbide drills for stainless steel.
The page highlights three top manufacturers with proven strengths in stainless steel machining, including in-depth coverage of recommended tools for this demanding material.

After-Sales Support from Melin Tool Company

After purchasing a product, customers can contact Melin Tool Company through the official website for technical assistance.

For machining issues or troubleshooting support, customers can use the “Request a Tech” form to connect directly with technical specialists.
If a product return or replacement is required, requests may be submitted through the “RMA Request” portal.

Company Information

Address	5565 Venture Drive, Cleveland, Ohio 44130
Phone Number	+1-800-521-1078 / +1-216-362-4200
Official Website	https://www.melintool.com/