Meet the SF-81, a top-tier offering from the F Series Tree Shape Radius End collection that’s designed to elevate your metalworking projects. Whether you’re shaping, deburring, or finishing, this burr handles it all with finesse.
Ideal for professionals working on cast iron, steel, brass, or copper alloys, this tool offers two cut types—Standard single cut and double cut—so you can pick exactly the performance you need. Its compact head diameter and sturdy shank make it incredibly versatile and easy to control.
With the SF-81 on your bench, expect rapid stock removal combined with a remarkably smooth finish every time. Ready to add serious precision to your workflow? This burr is here to deliver.
Key Features
Available in both Standard (Single) Cut and Double Cut variations for versatile applications
3/16 inch head diameter with 1/2 inch cut length for detailed work
Durable 3/16 inch shank with 2-inch overall length for easy fitting and maneuverability
Right-hand spiral flutes in single cut for fast stock removal
Double cut combines right and left-hand flutes to provide super smooth finishes
Left-hand cutting action on double cut gives excellent tool control during use
Works great on cast iron, steel, copper, and brass alloys
Tree shape radius end design allows access to tight or awkward contours
Precision ground carbide construction ensures longevity and consistent performance
Made in the USA for trusted quality and reliability
Specifications
Shape / Type: Tree Shape Radius End
Cut Type: Standard Cut or Double Cut
Head Diameter: 3/16 inch
Shank Diameter: 3/16 inch
Overall Length: 2 inches
Length of Cut: 1/2 inch
Material Compatibility: Cast iron, steel, copper, brass alloys
Brand / Manufacturer: Burrs4Less
Made In: USA
SKU / Part Number: 105-12113
Frequently Asked Questions
Q: Can I use the SF-81 on aluminum?
While it’s designed for metals like cast iron and steel, it can work on aluminum, but avoid clogging by using slower speeds.
Q: What’s the difference between single and double cut?
Single cut is best for rapid stock removal; double cut offers smoother finishes and better control with less vibration.
Q: Is the 3/16" shank compatible with standard rotary tools?
Yes, it fits most rotary tools that accept 3/16 inch shanks.
Q: How long will the carbide last?
Lifespan depends on use intensity but carbide burrs typically last longer than steel burrs and provide consistent performance.
Q: Can I use the SF-81 for woodworking?
The SF-81 is optimized for metal but can be used on hardwoods with care.
Q: Does it require any special maintenance?
Regular cleaning to remove metal shavings and proper storage will keep it in top shape.
Q: What kind of finish can I expect with the double cut?
A very smooth and controlled finish, reducing the need for additional polishing.
Q: Is this burr suitable for tight or curved areas?
Yes, the tree shape radius end is specifically designed for accessing intricate contours.
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.
