If you’re looking for precision and versatility in miniature carbide burrs, the SM-42 with Extended Shank options is a top pick. Designed specifically for detailed metalworking, it fits right into both hobbyist and professional workshops.
This burr suits users working with cast iron, steel, or precious metal alloys, thanks to its efficient cutting types that handle everything from rough stock removal to polishing. Whether you're shaping, grinding, or finishing, this tool is made to deliver smooth, controlled results every time.
With a compact head diameter and an extended shank, the SM-42 burr balances reach and control, making it easier to work in tight spaces while maintaining accuracy. Plus, it's an excellent deal when buying in bulk – perfect for busy shops that keep productivity high.
Key Features
1/8" Head diameter perfect for fine detail work
Extended shank options for deeper reach into tight spots
Choice of Standard Single Cut or Double Cut for different finishes
Single cut offers rapid material removal with smooth surface finishes
Double cut combines right and left hand flutes for super smooth results and better burr control
Compatible with cast iron, steel, copper, and brass alloys
Compact overall length (1-1/2") ideal for versatile tool setups
Durable 40 Series solid carbide construction for long wear life
Available at a reduced price for bulk buyers (100+ units)
Part of an inventory reduction sale—great opportunity to stock up
Specifications
Shape / Type: Miniature Burr
Cut Type: Standard Cut or Double Cut
Head Diameter: 1/8" (0.125 inches)
Shank Diameter: 1/8" (0.125 inches)
Overall Length (OAL): 1-1/2 inches
Length of Cut: 7/16 inches
Material Compatibility: Cast iron, steel, copper, brass alloys
Brand / Manufacturer: Burrs4Less
Made In: USA
SKU / Part Number: 107-08092-M
Frequently Asked Questions
Q: What materials can I use this burr on?
It works great on cast iron, steel, copper, and brass alloys.
Q: What is the difference between single and double cut?
Single cut removes material quickly and is good for rough work; double cut provides smoother finishes and better control.
Q: Can I use this burr on other metals like aluminum?
While designed for harder metals, it can be used on aluminum with care to avoid clogging.
Q: What size rotary tool collet do I need?
A 1/8" collet fits this burr perfectly.
Q: How long is the shank?
Overall length is 1-1/2 inches, giving plenty of reach for detailed tasks.
Q: Is this burr suitable for woodworking?
While primarily for metals, it can handle soft woods but isn’t optimized for that use.
Q: What speed should I use?
Use moderate to high speeds, but avoid overheating to preserve the burr’s lifespan.
Q: Are replacement burrs available in bulk?
Yes, purchasing 100 or more units reduces the price per burr significantly.
Q: How do I know when it’s time to Replace or Resharpen the burr?
Replace or Resharpen it when you notice decreased cutting efficiency or visible wear on the cutting edges.
Why Choose Carbide Burrs Direct?
Discover top reasons to pick our carbide burrs for your projects. Factory-direct quality at wholesale prices.
High Heat Resistance
Solid carbide construction maintains hardness even at high operating temperatures.
Maximum Durability
Solid piece construction ensures heat resistance and minimal breakage.
Affordable Pricing
Wholesale rates from USA manufacturer, high performance.
Industrial Heritage
Decades of experience supplying tools to the aerospace and automotive sectors.
