by Bernard Martin

Anyone who has spent time boring holes already knows the rules. You pick the bar based upon lenght to diameter ratios, depth, material, and tolerance before the tool ever gets near the spindle. And that's the mindset Canela designs their boring bars around.

Canela boring bars are built for internal turning, boring, and facing jobs/ When you’re holding size inside a bore, the bar has to behave exactly the way you expect, especially as reach increases.

The standard steel boring bars cover diameters from 8 mm to 50 mm, or roughly 0.315" to 2.000", with overall lengths up to 400 mm (~15.75"). For most day-to-day work, these bars are designed to run comfortably in the common 4:1 to 6:1 length-to-diameter range. That’s the sweet spot where rigidity is predictable and surface finish stays under control without slowing the process down.

When the print requires reach beyond what a steel bar can realistically support, Canela offers heavy metal boring bars manufactured from tungsten alloy. The higher density of tungsten increases the mass of the bar, which improves damping and reduces deflection as overhang increases. That added mass helps control vibration at longer L/D ratios, keeping the cutting edge stable and the bore on size. In deeper boring applications, where a steel bar starts to lose rigidity and starts to chatter, the heavy metal bar maintains consistent cutting behavior.

Material selection and heat treatment are handled with the same practical approach. The steel bars are manufactured from 42CrMo4, alloy steels, and through-hardened to approximately 38–42 HRC. That means rigidity without brittleness and a bar that holds up many many machine cycles.

Coolant-through options are available across much of the lineup, which becomes increasingly important as depth increases. Delivering coolant directly to the cutting edge improves chip evacuation, keeps heat from building up in the bore, and helps maintain consistent cutting conditions. For deep holes or tougher materials, that direct coolant path makes the process far more repeatable.

Canela organizes its boring bar lineup by insert orientation and clamping method, because those two factors directly control rigidity, insert security, and cutting behavior. Each style exists for a reason.

• Negative Boring Bars – Dimple Lock - These bars use negative, double-sided inserts secured with a dimple-style locking interface. The design provides repeatable insert positioning and solid seating under load. This style is typically chosen for general roughing and semi-roughing work where insert stability and consistent edge location matter more than low cutting pressure.
  
• Negative Boring Bars – Wedge Clamp (Double Lock) -Wedge clamp double-lock bars are built for higher cutting forces and more demanding conditions. The wedge system mechanically drives the insert into the pocket, improving clamping force and resistance to movement. These bars are well suited for heavier cuts, tougher materials, and interrupted bores where insert security is critical.
  
• Negative Boring Bars – Lever Lock - Lever lock designs focus on fast, positive insert retention with strong mechanical engagement. They’re often selected in production environments where repeatability and quick insert changes are important, while still maintaining the rigidity expected from a negative insert platform.
  
• Positive Boring Bars – Top Clamp - Positive top-clamp bars combine lower cutting forces with improved insert access. The top clamp provides additional security compared to a simple screw while keeping cutting pressure manageable. These bars are commonly used for semi-finishing and finishing operations, particularly in smaller bores or longer overhangs where stability benefits from reduced radial load.
  
• Positive Boring Bars – Center Screw - Center screw positive bars are the simplest and most compact configuration in the lineup. They prioritize low cutting forces and clean cutting action, making them a good choice for finishing work, lighter cuts, and applications where bore size or tool access is limited.
  
• Anti-Vibration Tools - For extended reach applications, Canela offers dedicated anti-vibration boring bars. These bars are designed to suppress chatter and control vibration when standard steel bars approach their practical limits. They’re intended for deeper bores and tighter tolerances where maintaining stability over long overhangs is non-negotiable.
  

Insert compatibility is where the Canela system really opens up. Depending on the bar style and clamping method, Canela boring bars are designed to accept a wide range of ISO insert shapes, including T, W, C, S, D, and V styles.

That gives you access to both positive and negative inserts, multiple corner angles, and a broad selection of chipbreaker and grade options. Whether the job calls for fine finishing, general boring, or heavier roughing cuts, you can select the insert geometry that best matches the material, depth of cut, and stability requirements instead of being forced into a single insert style.

When boring operations are approached the right way, these bars provide the rigidity, control, and consistency needed to hit size and finish without drama.

When you're working in the world of small bores, there’s zero room for error—or oversized tools. That’s why Everede’s Small Boring Bars have become a go-to for machinists tackling precision jobs on Swiss machines and compact CNC lathes. These bars are engineered for tight spaces, light cuts, and ultra-accurate results.
​
Small but Mighty
Everede’s small boring bars start at just 0.125" (1/8”) diameter and go up to 0.312", covering a wide range of micro-machining operations. Need to bore a hole barely wider than a matchstick? No problem. Offered in both steel and solid carbide shank options, they’re designed to handle different materials and machining environments.

• Steel Bars: Ideal for lower-speed or light-duty applications where flexibility can be a benefit.
• Carbide Bars: The preferred choice for improved rigidity, vibration resistance, and longer tool life—especially in longer-reach applications.

More Options Than You’d Expect
This isn’t a one-size-fits-all solution. Everede offers a wide range of bar diameters, overhang lengths, and insert styles to fit just about any small-part boring application. From internal profiling to facing and grooving, there’s a configuration for your specific job.

Versatile Insert Compatibility: Insert Styles That Work With You
The small boring bar line uses industry-standard inserts like CCMT, DCMT, and TPMT, which makes tool replacement easy and inventory more manageable. As an example, bars use common insert styles like TPMT 1.51, 2.52, and 3.52—so you’re not locked into proprietary tooling. That means easier sourcing, less inventory cost, and more flexibility at the spindle. These inserts handle everything from boring and facing to light profiling. Plus, with Everede’s known reliability, you’re getting consistent performance across the board.

Why It Matters
If you’re running tight-tolerance work in aerospace, medical, or any other high-precision field, your tooling needs to be dead-on. Everede’s small boring bars give you the precision you need, in the style your machines can handle—and your parts demand.

You can check out the small boring bar section of the Everede catalog at THIS LINK or get in touch with us and we'll help you find the small boring bar you need.

by Bernard Martin

If you’re looking to get into tight spots with precision, power, and no drama, Everede’s lineup of ANSI boring bars might just be your new best friend in the shop. Whether you're working on small holes, deep bores, or heavy-duty roughing, these tools are built to help you dig deep—and do it right.

Let’s break it down and see what makes Everede’'s ANSI boring bar selection such a solid choice for machinists who want both versatility and reliability.

Boring Bars Built to Go the Distance
Everede isn’t messing around. Their ANSI-standard boring bars cover a massive range, from micro to major. Each series is tailored for a specific type of work, but here’s the quick and dirty:

• Series A – Ideal for micro-machining and tight bores, getting into holes as small as 0.180".
• Series B – A solid step up for light roughing and finishing in bores from 0.270" and up.
• Series C to D – Perfect for general-purpose boring in medium to large diameter applications, up to 1.344".
• Series E through H – These bars give you great flexibility with boring diameters up to 1.094".
• Series FL – Spiral flute? Yes, please. Excellent chip evacuation for clean, consistent cuts in deeper bores.
• Series PB, TH & RCH – Niche bars for specialty cuts and setups—because sometimes your part just has that one weird feature.

Let’s Talk Inserts – Shapes That Get the Job Done
What really brings a boring bar to life? The insert, of course. Everede’s ANSI bars are designed to work with a few go-to insert shapes, and each has its own sweet spot:

• C-Style (80° Diamond, CCGT/CCMT): This is the all-rounder. Great for finishing or medium roughing. The large corner radius makes it stable and forgiving—perfect for general-purpose boring.
• D-Style (55° Diamond, DCGT/DCMT): Think tight corners and fine finishes. D-style inserts are great when you need a sharper angle to avoid walls or features. Expect great chip control and excellent surface finish.
• T-Style (Triangle, TCGT/TCMT): These are tough and aggressive. T-style inserts offer three cutting edges per side and are excellent for more robust applications where material removal is key. Great for cast iron or harder materials.
• W-Style (Trigon, WCGT/WCMT): Your go-to for maximum insert strength. With a wide cutting edge and beefy geometry, W-style inserts handle interrupted cuts or tough materials like a champ.

Everede matches the bar geometry and pocket depth to the insert style, so everything locks in smooth and performs like a dream.

Getting the Right Reach – Length-to-Diameter Ratios
We all know that going too far without the right support can end in chatter and tool failure. Everede’s got you covered with options that balance reach and rigidity:

• Steel Shank Bars: Safe up to about 4:1 L:D ratio. Ideal for shorter reach or shallow depth applications.
• Heavy Metal Shanks: These offer a solid middle ground—typically good for up to 6:1 L:D. The added mass and vibration-damping properties make them great for deeper cuts where chatter can creep in.
• Carbide Shank Bars: These give you extra backbone—up to 8:1 L:D is possible. Best when you're pushing into deeper bores and need maximum rigidity.

Cool Under Pressure – Standard vs. Coolant-Thru
Running dry or flood coolant? No problem. But when the chips are flying and the heat’s rising, Everede’s coolant-thru options are worth their weight in productivity. Keeping the insert cool helps extend tool life, improves chip evacuation, and keeps your tolerances tight.

Why Everede?
Built in the USA and backed by decades of application knowledge, Everede ANSI boring bars are built to last, easy to index, and just plain reliable. Whether you're running a manual lathe, CNC turning center, or tackling aerospace components, there's a boring bar in the lineup that’ll fit your job.

Want to learn more?
Check out the full catalog here:

And when you're ready to spec the right tool for your next job, give a shout out to the team at Factory Tooling Solutions. They’re happy to help you match the bar to the bore, the insert to the material, and the performance to the part.