20pk Tungsten Carbide Micro Drill Bits 5 each .2mm .3mm .4mm .5mm 1/8″ Shank for Modeling Watch Repair JEWELRY MAKING CRAFTS CNC FR4 Circuit Boards MODEL TRAINS

Description

Product Overview

Daewon Industries brings a meticulously engineered set of tungsten carbide micro drill bits designed for precision work across a spectrum of demanding applications. The collection includes twenty high‑quality bits, each featuring a robust 1/8 inch (3.175 mm) shank that fits standard power drills, micromotors, and hand‑held rotary tools. The bits are offered in five incremental diameters—.2 mm, .3 mm, .4 mm, and .5 mm—providing the exact size control required for delicate tasks such as watch movement drilling, fine jewelry fabrication, printed circuit board (PCB) routing, and FR‑4 substrate machining. Constructed from Japanese‑sourced tungsten carbide, the cutting edges retain their sharpness even after extensive use, reducing the need for frequent replacement and ensuring consistent hole quality.

The package dimensions of 3.7 × 2.1 × 1 inches and a lightweight 3.2 oz total weight make the set portable and easy to store. Each bit is individually protected within a reusable plastic case that prevents damage during transport and simplifies inventory management for professionals who need quick access to the right size. The set’s best‑seller rank in the Micro Drill Bits category reflects its popularity among hobbyists and industry specialists alike, confirming its reputation for reliability and performance.

Usage

The versatility of this drill bit set makes it an indispensable tool for a wide range of precision‑drilling scenarios. Watchmakers will appreciate the ability to create clean, burr‑free holes in tiny metal components, while jewelry makers can use the bits to fabricate intricate settings, beadwork, and delicate filigree without compromising material integrity. CNC enthusiasts benefit from the consistent geometry of the bits, which translates to smoother toolpaths and reduced wear on machine spindles during prototype production or small‑batch manufacturing.

In the electronics arena, the .2 mm to .5 mm sizes are perfectly suited for drilling vias and component mounting holes in PCBs and FR‑4 circuit boards, where accuracy is paramount to avoid trace damage. Model train hobbyists and craft makers also find value in the set for creating precise openings in plastic, resin, and wood components, enabling the construction of detailed scale models and custom accessories. The 1/8 inch shank ensures compatibility with most bench‑top drills, rotary tools, and even some handheld electric screwdrivers equipped with a chuck, providing flexibility across workshop environments.

Why Choose Us

Choosing Daewon means selecting a brand with a legacy of precision engineering and a commitment to quality that is evident in every bit of this set. The tungsten carbide material is sourced from reputable Japanese manufacturers known for producing the hardest, most wear‑resistant alloys available, guaranteeing that each cutting edge maintains its geometry even after thousands of drilling cycles. Rigorous quality control processes, including microscopic inspection and hardness testing, ensure that every bit meets exacting standards before it reaches the customer.

Beyond material excellence, Daewon provides comprehensive after‑sales support, offering technical assistance, replacement parts, and a responsive customer service team ready to address any concerns. The protective case not only safeguards the bits but also reflects Daewon’s attention to user convenience, allowing professionals to keep their tools organized and readily accessible. With a track record of positive customer reviews and a strong presence in the industrial and scientific marketplace, Daewon’s micro drill bit set stands out as a reliable, cost‑effective solution for precision drilling needs.

Key Features

• Twenty high‑quality tungsten carbide bits deliver long‑lasting sharpness for demanding projects.
• Five precise diameters (.2 mm to .5 mm) provide exact sizing for watch, jewelry, CNC, and PCB work.
• Robust 1/8 inch shank ensures compatibility with most drills and rotary tools.
• Protective reusable case keeps bits organized and prevents damage during transport.
• Daewon’s dedicated customer support offers technical help and easy replacements.

FAQ

What materials can these bits drill?

The tungsten carbide construction allows the bits to efficiently drill soft metals, hardened steel, brass, copper, plastics, resin, wood, FR‑4 circuit boards, and delicate components used in watchmaking and jewelry.

Are the bits compatible with my handheld rotary tool?

Yes. The 1/8 inch (3.175 mm) shank fits standard chucks found on most handheld rotary tools, bench‑top drills, and micromotors, making the set versatile for both stationary and portable applications.

How do I maintain the sharpness of the bits?

To preserve edge integrity, avoid excessive pressure, use appropriate cutting speeds, and clean the bits after each use to remove metal filings. Storing them in the provided case when not in use also helps prevent accidental damage.

Can I use these bits for PCB via drilling?

Absolutely. The .2 mm to .5 mm sizes are ideal for creating precise vias and component holes in printed circuit boards, ensuring clean cuts without tearing the copper traces.

What warranty does Daewon offer?

Daewon provides a limited one‑year warranty covering manufacturing defects. If a bit fails due to material issues within this period, the company will replace it at no additional cost.