V-groove bit Dremel 640

The Dremel 640 V-groove bit is designed for precise engraving and cutting, producing clean V-shaped grooves in wood, plastic and soft metals. With a 6.4 mm cutting diameter and a 3.2 mm shank, this rotary tool accessory is suited for detailed lettering, sign word carving and fine decorative channels.

Advantages

The V-shaped profile delivers sharp, consistent grooves with minimal tear-out. Its 3.2 mm shank fits standard rotary tool chucks for stable operation. The 6.4 mm diameter provides a balance between visibility of the cut and control for detailed work.

Suitable for

• Engraving letters and sign wording
• Decorative V-grooves in wood and plastics
• Detail work on soft metals
• Fine channel cutting for inlays and trim

Key specifications

• Brand: Dremel
• Model / MPN: 2615064032
• EAN: 8710364008308
• Type: V-groove bit
• Cutting diameter: 6.4 mm
• Shank diameter: 3.2 mm

How to use

Secure the Dremel 640 in the rotary tool collet with the 3.2 mm shank fully inserted and tightened. Select a moderate speed appropriate to the material (lower speeds for plastics and soft metals, medium to high for wood). Guide the bit along the desired path with steady, controlled motion; avoid excessive pressure—let the bit cut at its own pace. Make multiple shallow passes for deeper grooves to maintain accuracy and reduce chipping.

Usage recommendations

Use appropriate personal protective equipment (eye and respiratory protection) and secure the workpiece. Test on a scrap piece to set speed and feed. For best results on lettering, use slow, steady feed and consider finishing passes to clean edges.