Diameter: 1.0mm, High-Grade N52, Watchmaking Precision We supply micro-fabrication of Neodymium Disc Magnets with diameters as small as 1.0mm. As shown in the product photo. These magnets have tiny dimensions – roughly the size of a pinhead. Handling them requires fine-point tweezers and steady hands. Standard magnet factories struggle to produce discs below 3mm without crumbling the edges. We use Semiconductor-Grade Dicing Saws to slice these 1mm discs with zero chipping. Deliver high-power micro-magnets that function reliably in the tightest possible spaces. No matter you need the standard 1mm x 0.5mm coin shape, or a custom thickness. Why 1mm? At this scale, the magnet is usually a precision component, not a fastener. 1. The “Invisible” Trigger: The Application: Hall Effect Sensors in micro-electronics. The Logic: A 1mm magnet can be embedded directly into a plastic button or a rotating shaft. It provides a localized magnetic field that triggers a sensor. And not interfering with nearby components just millimeters away. 2. Horology & Instrumentation: The Application: Mechanical watch movements and gauge needles. The Benefit: In watchmaking, weight is the enemy. A 1mm x 0.5mm magnet weighs almost nothing. But still provides enough force to actuate a micro-lever or secure a battery door. 3. Hiding the Hardware: The Application: Scale Models and Miniatures (e.g., Warhammer or 1:144 scale models). The Benefit: You can drill a tiny 1mm hole in a model part, glue this magnet in, and paint over it. The connection becomes completely invisible “magic.” Manufacturing Advisory: The “Volume” Problem Physics dictates that tiny magnets need high grades. 1. Grade Selection (N50 / N52 is Mandatory): The Physics: Magnetic pull force is determined by volume. A 1mm magnet has almost no volume. The Advice: Do not use Grade N35 for this size. It will be too weak to be useful. We almost exclusively manufacture 1mm discs in N50 or N52. Ensure they actually hold weight (approx. 15g – 25g holding force). 2. Coating Integrity: The Challenge: Tumbling thousands of 1mm magnets to plate them is difficult. They can stick together and shield each other from the plating solution. Our Quality: We use a Vibratory Plating method. Ensure every single 1mm disc gets a full coating of Nickel or Parylene. Prevent corrosion. Handling & Assembly Guide Please read this before opening the box. These are difficult to handle. 1. The “Static” Effect: At this size, static electricity and surface tension are often stronger than the magnetic force. The magnets may stick to your tweezers or gloves due to static. Tooling: We recommend using Non-Magnetic Tweezers (Ceramic, Brass, or Plastic) or a Vacuum Pick-Up tool. If you use steel tweezers, the magnet will snap to the tool and be very hard to remove. 2. The “Carpet” Risk: If you drop a 1mm magnet on the floor, it is gone forever. Advice: Open the packaging over a white plastic tray or a clean table. Do not open the vacuum pack over carpet. Ordering Guide: Micro-Specs To quote these accurately, please specify: 1). Dimensions: Diameter x Thickness – e.g., 1mm x 0.5mm, 1mm x 1mm, 1mm x 2mm). 2). Tolerance: “Is this fitting into a precision-drilled hole?” – We can sort for /- 0.01mm if needed. 3). Coating: Nickel (Silver) or Parylene (Grey)? 4). Quantity: – Minimal order quantities usually apply, due to the setup time for micro-slicing. – It is just as fast to make 5,000 as it is to make 50.