end mills

“Discover the cutting-edge efficiency of SAMHO’s end mills. Perfect your machining tasks with superior quality tools.”

6 flutes end mills

How Flute Count Affects the Performance of End Mill Bits for Metal

A mold shop supervisor from Bavaria, Germany, recently sent our technical team a machining video along with photos of several destroyed tools. While using a 5-axis machining center to rough-cut mold steel (1.2379/D2) at HRC58, they experienced severe built-up edge (BUE) formation within ten minutes of slot milling, immediately followed by edge chipping. After reviewing […]

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diamond end mill cutting tools

CNC Machine Setup for Graphite Cutting: Engineering Considerations for a High Performance Graphite Machining System

When helping clients optimize graphite electrode machining, we frequently see a familiar challenge. A shop installs high-speed CNC machining centers and buys premium graphite end mills. Yet, once mass production begins, issues quickly emerge—inconsistent tool life, dimensional drift, poor surface finish, and equipment failure caused by abrasive graphite dust. We vividly recall a project with

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rounded corner cutter

Understanding Flute Design in Solid Carbide End Mill Bits for Hardened Steel Processing

Last week, a German mold shop contacted us about an issue machining HRC62 SKD11 steel cavity pockets on a 5-axis mill. Whenever they bumped the spindle speed, the tool produced a high-pitched squeal, followed instantly by micro-chipping along the cutting edge. Their lead engineer emailed us: “Your carbide substrate and coating are solid, so why

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6-flutes-end-mills

4-Flute vs 6-Flute Carbide End Mills for Hardened Steel: Which One Should You Use?

Not long ago, we received an urgent email from a long-standing German client just as we were discussing the increasingly stringent demands mold shops face regarding machining efficiency for high-hardness components. The client was machining a precision mold cavity from HRC62 D2 hardened steel. They had hoped to use a 6-flute tool to handle both

4-Flute vs 6-Flute Carbide End Mills for Hardened Steel: Which One Should You Use? Read More »

graphite end mill

Dust Control in Graphite Machining: How Graphite Machining System Improves CNC Accuracy and Tool Life

When providing graphite electrodes and precision graphite component machining solutions, we often see a critical issue that shop managers overlook. Even after optimizing cutting dimensions, surface finish, and tool life, large amounts of graphite dust still accumulate inside the equipment during long production runs. Over time, this uncontrolled dust environment severely compromises overall machining stability.

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ballnose end mill

4-Flute vs 5-Flute End Mills for Titanium: Which One Boosts Productivity?

Recently, a CNC supervisor from Munich, Germany, sent us a video of an on-site operation: a new 5-axis machining center was cutting Ti-6Al-4V (TC4) aerospace parts with high-pressure internal coolant. The cutting noise was piercingly sharp. Within twenty minutes, chatter marks appeared on the workpiece, and the tool’s flank face showed severe built-up edge (BUE)

4-Flute vs 5-Flute End Mills for Titanium: Which One Boosts Productivity? Read More »

end mills for graphite machining

High Speed Milling of Graphite Using Diamond Coated End Mills for Precision Machining Applications

In real-world manufacturing, producing high-precision graphite electrodes in volume presents a distinct challenge. As demand for higher efficiency rises, traditional graphite milling methods quickly reveal their limitations. High-speed machining with standard carbide tools often leads to rapid tool wear, thermal variations, poor surface finish, and severe dust contamination. We recently collaborated with a mold manufacturer

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mold cutting tools

Roughing Endmills for Steel in Mold & Die Manufacturing: Best Practices

During a technical consultation with the chief process engineer at a long-established German mold manufacturer, he showed us several worn-out roughing endmill for steel tools. Every single cutter exhibited severe micro-chipping and thermal cracks on the cutting edges. They had been machining an H13 die-casting mold (HRC 48–52) for an automotive headlight bracket. Machine spindle

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diamond end mill cutting tools

Dry Machining of Graphite: Optimizing Graphite End Mill Performance in a Complete Graphite Machining System

When optimizing graphite electrode projects for clients, we frequently tackle a common challenge. While precision requirements get stricter, traditional milling methods struggle to balance tool life, surface quality, and cycle time. A recent client manufacturing mold electrodes needed to mass-produce high-precision parts with deep cavities and micro-radii. During early tests, standard carbide tools wore down

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carbide-roughing-milling-cutters

Why Choose a Bullnose Endmill for Steel Machining Over Flat Endmills?

Last month, a long-time German client emailed us in frustration. He was machining a batch of 42CrMo4 pre-hardened steel mold bases, but his standard flat-bottom carbide endmills kept micro-chipping at the corners in less than 30 minutes. This caused nasty chatter marks across the workpiece and sent his per-part machining costs soaring due to constant

Why Choose a Bullnose Endmill for Steel Machining Over Flat Endmills? Read More »