If you're on the hunt for a reliable miniature burr that delivers punch-for-punch performance, the SM-81 is built just for you. Crafted with precision, this 3/16" solid carbide burr fits perfectly in the toolbox of metalworkers and woodworkers alike.
Whether you’re shaping cast iron, steel, or brass, the SM-81 offers versatility with its standard or double cut options, making it ideal for everything from rapid stock removal to creating smooth finishes.
This burr features a compact 5/8" length of cut combined with a 3/16" head diameter and a 2" overall length—just the right size for those detailed jobs where accuracy really counts. Ready to upgrade your workflow?
Key Features
Made from solid carbide for long-lasting durability
Available in both standard cut and double cut for choice in surface finish
Standard cut designed for fast stock removal with a right-hand spiral flute
Double cut combines right and left-hand flutes for a super smooth finish
Compact 3/16" head diameter ideal for detailed and intricate work
5/8" length of cut to reach tricky spots effectively
Overall length of 2" for easy handling and control
Perfect for metals including cast iron, steel, copper, and brass alloys
Slight left-hand cutting action on double cut enhances burr control
Developed for professional metalworking and woodworking use
Specifications
Shape / Type: Miniature Burr
Cut Type: Standard Cut or Double Cut
Head Diameter: 3/16"
Length of Cut: 5/8"
Overall Length: 2"
Material Compatibility: Cast Iron, Steel, Copper, Brass
Brand / Manufacturer: Burrs4Less
Made In: USA
SKU / Part Number: 107-12143-M
Frequently Asked Questions
Q: What materials can I work on using the SM-81 burr?
You can use it on cast iron, steel, copper, and brass alloys effectively.
Q: What is the difference between the standard cut and double cut types?
The standard cut is for fast stock removal with a right-hand spiral flute, while the double cut combines right and left-hand flutes for smoother finishes.
Q: What diameter is the head of the SM-81?
It features a 3/16" head diameter, ideal for detailed work.
Q: What is the overall length of this burr?
The overall length measures 2", giving good reach and control.
Q: Is this burr compatible with handheld rotary tools?
Yes, as long as your rotary tool accepts a 3/16" shank diameter, it will fit perfectly.
Q: Can I use the double cut burr for all kinds of metals?
It works best on metals like steel and brass for smooth finishes but may not be ideal for extremely soft or abrasive materials.
Q: Does the burr require any coolant when in use?
Using coolant or lubricants on metals prone to overheating will extend burr life and improve cutting performance.
Q: How do I maintain the sharpness of this burr?
Regular cleaning with a brass wire brush and avoiding excessive pressure will keep it sharp longer.
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.
