SM-42 Carbide Burr with Extended Shank Options
- Buy 5 for $3.90 each and save 7%
- Buy 100 for $3.27 each and save 22%
Product Overview
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
The Long-Term Value of Reliable Miniature Carbide Burrs
Investing in the SM-42 with Extended Shank isn’t just about the immediate precision—it’s a smart move to cut down on frequent tool replacements. The solid carbide construction means these burrs keep their sharpness longer, reducing downtime and the need to stockpile replacements. Over months and years, that reliability translates to less waste and more consistent daily performance, helping your workflow stay on track without hiccups.
Trust and Innovation from Burrs4Less
Burrs4Less has a solid reputation among USA metalworkers for balancing innovation with practical needs. Their 40 Series solid carbide burrs have been recognized industry-wide for toughness and precision. This particular model—featuring both cut types and extended shanks—is a product of listening to what users demand: durability combined with control. Plus, maintaining environmental responsibility is part of the brand’s commitment, with efficient manufacturing processes and long-lasting tools that minimize the footprint over time.
Case Study: Real Business, Real Results
Chicago, IL – A local metal fabrication shop upgraded their tooling to improve precision finishing.
"Switching to the SM-42 miniature burrs gave us more consistent control when working on small parts. The extended shank made a noticeable difference in tight, hard-to-reach areas."
Jessica Moore – Shop Manager
Output quality increased by 35%, reducing rework time significantly.
How the Double Cut Design Boosts Your Finishing Game
The double cut on this burr combines right hand and left hand spiral flutes, which means it takes a bit of the rough with some smooth all in one go. Imagine sanding a wooden surface with two types of sandpaper at once: one aggressive for removing bumps and the other finer for polishing. What you get is efficient material removal plus a polished finish that’s easier to control. The light left-hand cut also helps keep the burr steady in your hand, giving you better accuracy and less chatter.
Installation and Maintenance Guide
Setting It Up
- Insert the shank firmly into your rotary tool or die grinder collet.
- Ensure the burr is securely fastened to prevent wobble during use.
- Choose the correct rotation speed: slower for finishing, higher for stock removal.
- Verify that the extended shank clears any tool guards or attachments.
- Wear proper eye and hand protection before starting work.
Keeping It Going
- Clean debris and metal dust off the burr after each use using a soft brush.
- Avoid overheating by using moderate speed and letting the tool rest during extended use.
- Store in a dry, protective case to prevent damage to cutting edges.
- Replace the burr once you notice dullness, rather than forcing it through tough tasks.
- Inspect the shank for bends or wear regularly; a straight shank ensures safe performance.
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.
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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 Burrs4less?
Discover top reasons to pick our carbide burrs for your projects. Factory-direct quality at wholesale prices.
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Premium Quality
Pro-grade tungsten carbide burrs for durable, precise work.
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Affordable Pricing
Wholesale rates from USA manufacturer, high performance.
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Fast & Free Shipping
24-hour shipping, free on $100+ orders.
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Expert Guidance
Team assists in picking ideal burr for materials.
Ready for Order
Don’t wait to upgrade your tool kit! The SM-42 with Extended Shank options combines precision and reach, perfect for the detailed work you do every day. Take advantage of our bulk pricing now and keep your shop running smooth and efficient.
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