Drill bit set Verto DNG-17714 — mini CNC bits 10 pcs, sizes 0.2–1.2 mm

Set of 10 Verto miniature drill bits (model DNG-17714) designed for CNC and precision drilling tasks. The set includes very small diameters from 0.2 mm to 1.2 mm, covering ultra-fine to small-diameter holes required in printed circuit board (PCB) work, model making, jewellery fabrication, engraving and other detailed machining operations. These mini CNC bits are suitable for high-speed spindles and micro-drilling processes where repeatable, accurate hole sizes are necessary.

Advantages

The assortment provides a graduated range of diameters allowing selection of the exact size needed for delicate operations. Each bit is manufactured for concentricity and dimensional consistency to reduce wobble at high spindle speeds. The small diameters enable precise hole placement and minimal material removal, which lowers the risk of delamination on PCBs and damage to fine components. The set is compact and organised for easy selection and storage.

Suitable for

• PCB drilling and circuit board prototype work
• Model making and scale hobby projects
• Jewellery drilling and fine metalwork
• Engraving, micro-machining and toolroom prototyping
• High-speed spindle micro-drilling applications

Key specifications

• Quantity: 10 drill bits
• Diameter range: 0.2 mm to 1.2 mm (incremental sizes within this range)
• Intended use: micro-drilling for CNC and precision manual operations
• Suitable materials: common PCB substrates, soft metals, plastics, resins and wood for fine work
• Compatibility: designed for high-speed spindles and small collet chucks that accept micro bits

How to use

Select the correct diameter for the hole required and secure the bit in a compatible micro collet or chuck ensuring good axial alignment. Use appropriate spindle speeds and feed rates for the material: higher speeds with light feed for very small diameters, and avoid excessive side loads that can break the bits. When drilling PCBs, use backing material to reduce breakout and apply controlled pecking or intermittent withdrawal to clear chips. Inspect bits regularly for wear and replace if tips become dulled or bent to maintain hole accuracy.

Usage recommendations

Use proper eye protection and dust extraction when machining. For longest life, run coolant or air blast to clear chips, start with pilot or smaller diameters if needed, and handle bits carefully to avoid bending or tip damage.