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Zund R25 3910705 Double-Flute CNC Milling and Router Bit

The Zund R25 3910705 is a double-flute router bit designed for compatible Zund CNC cutting systems. With a 0.6 mm cutting diameter and 3 mm cutting length, it is suitable for precision routing applications involving thin aluminum and plastic materials.

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Description
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Zund R25 3910705 Double-Flute CNC Milling and Router Bit

Technical Specifications

Part Number: 3910705
Shank Diameter: 1/8 in (3.175 mm)
Routing / Cutting Diameter: 0.6 mm
Max. Routing Depth: 3 mm
Total Tool Length: 38 mm
Number of Flutes / Cutting Edges: 2
Max. Rotation Speed: 80,000 RPM
Compatible Tool Modules: Zünd PN 150 / PN 450 W

Recommended Materials & Applications
Because of its ultra-thin 0.6 mm cutting diameter, the R25 bit is built exclusively for delicate, rigid board operations:
Primary Materials: PMMA/Acrylic (Perspex), polycarbonates, hard plastics, and soft aluminum alloys.
Best Uses: Micro-engraving text, milling narrow channels, sharp-cornered inlay tracing, and processing fragile electronic or industrial plastic sheets.

Operation & Handling Tips
Spindle Compatibility: The 1/8-inch shank requires an appropriate high-frequency spindle collet or adapter sleeve, standard on Zund’s 150W and 450W Universal Routing Tools (URT).
Fragility Warning: A 0.6 mm cutting edge snaps easily under excessive mechanical load. Ensure your feed rates are precisely tuned, maintain high RPMs (closer to its 80k maximum limit), and utilize your system's vacuum or air blast to instantly clear microscopic chips from the channel.

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