Sparkfun MC Etcher - Diamond Drag Bit (90 Degree)

The MC Etcher is a versatile diamond drag bit designed for precision engraving on a variety of materials, including composites, metals, and glass. It features a diamond-coated, spring-loaded tip that creates intricate patterns without cutting, ensuring clean and precise etching. The tool is available with a 90-degree tip for deeper penetration in hard materials or a 120-degree tip for wider lines in softer substances. It is important to note that the spindle should remain off during use.

Perfect for artists and engineers alike, the MC Etcher allows for detailed engraving on materials such as acrylic, plexiglass, polycarbonate, aluminum, brass, stainless steel, glass, porcelain, ceramics, granite, and marble. Whether crafting personalized gifts or creating industrial designs, this tool provides the versatility needed for a wide range of projects.

The MC Etcher stands out due to its ability to deliver fine line engravings without the need for rotary action, preserving the integrity of delicate surfaces. It ships in a convenient reusable storage tube, ensuring the tool remains protected when not in use.

To achieve optimal results, it's recommended to use a feed rate of 152 cm/min and a plungerate of 76 cm/min, with a cut depth of 0.38 mm. Users can generate toolpaths using software like Carbide Create, setting the RPM to zero to accommodate the non-rotating nature of the bit. This flexibility allows for both contour and pocket toolpaths, as well as outline and fill toolpaths with Carbide Create Pro.

While the MC Etcher excels in engraving various materials, its longevity is influenced by the hardness of the material. Softer substances like plastics result in minimal wear, whereas harder materials such as glass and stone can accelerate wear. Conducting tests to determine the optimal toolpath density can help extend the tool's life, allowing for consistent and high-quality engravings over time.