1/8" Shank CNC Router Bits & End Mills for Desktop CNC

Shop 1/8" shank CNC router bits, end mills, micro drills, and small cutting tools for desktop CNC machines. This collection is curated for small CNC routers, hobby CNC machines, desktop mills, PCB work, plastics, acrylic, wood, composites, G10, FR-4, carbon fiber, model making, and precision detail cutting.

All tools in this collection use a standard 1/8" shank, commonly used with small CNC collets, desktop CNC spindles, rotary tool holders, and precision drilling setups. Use the product grid below for selected starter sets, end mills, O-flute tools, diamond-flute routers, chip-breaker routers, diamond-coated routers, and micro drill sets.

Shop by Tool Type

Micro & Miniature End Mills → Small 2-flute carbide end mills for detail cutting, fine slots, profiling, and precision desktop CNC work. Single-Flute & O-Flute End Mills → Tools for acrylic, plastics, soft aluminum, clean chip evacuation, and reduced melting. Diamond-Flute Routers → Cross-cut carbide routers for G10, FR-4, fiberglass, PCB laminate, composites, and brittle sheet materials. Chip-Breaker Routers → Router bits for chip control, thicker laminates, plastics, fiberglass, G10, FR-4, and profile routing. Diamond-Coated Routers → PCD/CVD diamond-coated routers for carbon fiber, graphite, fiberglass, G10, FR-4, and abrasive composites. Micro Drill Sets → 10-piece incremental drill sets and assorted micro carbide drill sets for PCB holes, model work, plastics, crafts, and small CNC drilling.

Choosing a Tool for Desktop CNC Work

  • Starter sets: a good first choice if you want several common sizes instead of choosing one tool at a time.
  • 2-flute end mills: useful for general cutting, slotting, profiling, and detail machining in suitable materials.
  • O-flute and single-flute end mills: usually the better starting point for acrylic, plastics, and soft non-ferrous materials where chip evacuation matters.
  • Diamond-flute routers: useful for G10, FR-4, fiberglass, PCB laminate, brittle plastics, and abrasive sheet materials.
  • Chip-breaker routers: useful where chip control, thicker laminate routing, or stable profile cutting is important.
  • Diamond-coated routers: the premium option for carbon fiber, graphite, fiberglass, G10, FR-4, and highly abrasive composites.
  • Micro drill sets: useful for PCB holes, model work, small precision holes, and closely spaced numbered drill sizes.

Helpful Guides

PCB & Precision Tooling → Tooling guidance for PCB drilling, routing, isolation work, precision holes, and small CNC applications. Chip Breaker vs Diamond-Flute Routers → Compare router geometries for PCB material, G10, FR-4, fiberglass, laminates, and composite sheet routing. Feed & Speed Charts → Starting feed and speed references for carbide drills, routers, diamond-flute tools, chip breakers, and end mills. Diamond-Cut Router Overview → Overview of diamond-cut router styles for PCB material, fiberglass, G10, FR-4, plastics, and composite routing. End Mill Bits Guide → Learn how end mill flute count, geometry, cut direction, diameter, and material choice affect cutting performance. Router Bit Selection Guide → Choose between diamond-flute routers, chip-breaker routers, diamond-coated routers, and other CNC router tools.

Use the filters below to narrow by diameter, tool type, flute geometry, material/application, length of cut, and cut direction.