The AMAOE Abrasive K40 Drill Pen Tip is a high-hardness grinding accessory designed for precision material removal with a micro drill pen. This 2-piece set features a fine-grit abrasive bit ideal for detailed work on printed circuit boards (PCBs), small metal components, and plastic casings.

The K40 profile typically refers to a pointed or cone shape, which is optimized for accessing tight corners, carving fine details, and cleaning up solder joints without damaging surrounding components.

Key Features

• High-Precision K40 Profile: The fine-point geometry allows for excellent control in tight spaces, perfect for circuit board trace repair and pad cleaning.
• Standard 3mm Shank: Engineered to fit universal micro drill pens, hanging rotary tools, and electric engravers (3mm collet).
• High-Hardness Abrasive: Constructed from durable industrial abrasive (often Corundum or similar) to ensure efficient material removal and long service life.
• Versatile Compatibility: Suitable for use on PCB substrates, copper traces, soft metals, plastics, and fiberglass.

Technical Specifications (Typical)

• Model: K40
• Shape: Pointed / Fine Cone
• Shank Diameter: Approx. 3.0mm – 3.2mm (Standard Micro Drill)
• Material: Aluminum Oxide / High-Speed Steel Abrasive
• Quantity: 2 Pieces

Applications

• Motherboard Repair: Cleaning oxidation from gold fingers and preparing pads for soldering.
• IC Chip Work: Carefully grinding epoxy or trimming IC leads for rework.
• Model Making: Shaping, deburring, and polishing small plastic or resin parts.
• Rust Removal: Cleaning corrosion from small metal components and battery contacts.