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CNC graphite machining looks no different than cutting any other material. However, the nature of graphite—high conductivity, softness, and dust emission—makes it unlike cutting traditional metals and alloys.

Every student that has snapped the tip of his or her pencil can quickly understand why working with graphite can be difficult. It is one of the softest materials on the Mohs Hardness Scale—a 1.5 out of 10 (somewhere between talc and gypsum).

Machining graphite via traditional practices presents unique challenges due to graphite’s abrasive nature and propensity to produce fine dust particles. These particulars can be, as noted, not only harmful to the operator, they can wreak havoc on machinery and impact product reliability and machine tool component life. Last, but not least, machining graphite dry is a more time-consuming process.

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To increase your productivity including lights-out manufacturing capability, Methods builds, deploys, and services solutions that combine:

Graphite’s physical and chemical characteristics are why manufacturers from many industries use the material both in their products and production. Graphite has strong conductivity and is highly refractory. This makes graphite ideal for the creation of electrodes often used in the production of dies and molds for aerospace, medical, power generation, consumer packaging, and automotive components.

The alternative is to cut graphite in a machine purpose-built for the material—like a Yasda micro-center equipped with our wet graphite machining system.

Yasda is synonymous with precision and quality, due to its long history of developing high-precision machining centers that push the boundaries of what’s achievable. Known for their exceptional accuracy, thermal stability, and rigidity, YASDA micro centers excel when working with materials like graphite, where the precision of Yasda can pay dividends not only with hard milling but also with electrodes manufactured to superior tolerances.

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A flood coolant system delivers dielectric fluid around the tool and flushes graphite into the coolant tank. Furthermore, cartridge filtration and tank sweeper systems clean cutting fluid and keep graphiite dust from contaminating machine components and/or your shop environment.

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To manage the graphite byproduct, YASDA YMC micro centers equipped with the wet graphite package come standard with flood coolant, work zone flushing, minimum quality lubrication, a graphite filtration system, and a coolant tank sweeper system.

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Machining graphite creates a very abrasive dust that can be harmful to shop workers, and while dust collection systems on machine tools machining graphite are helpful, they do not mitigate the risk on their own.

Luckily, our aforementioned students do not incur perhaps the most significant problem of traditional graphite machining practices: toxicity.

Due to its softness, it is easy to understand why it’s challenge to cut and machine graphite. It is strong, but brittle, and very likely to chip if not handled with precision. This requires shops to cut at a slower feed rate than metal cutting.

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