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CNC Boring Services
Are you looking for perfect holes in your parts? CNC boring might be just what you need! At Istar Machining, we make holes that are super exact – just like drawing a perfect circle every time. We have the tools, skills, and machines to make your parts work better than ever.
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Supports uploading of the following file formats: .STEP .STP .SLDPRT .STL .IPT .3MF .3DXML .PRT .SAT .DXF .X_T .X_B .JT .CATPART
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23 Years
Istar Machining's years in the industry
300,000 square feet
The size of Istar Machining's factory
300 CNC machines
Our CNC equipment count
1000 skilled workers
Istar's number of skilled machinists/operators
Materials We Can Bore
Our 5-axis machining centers can bore holes in almost any material:
- Aluminum (soft but needs the right cutting speed)
- Stainless Steel (tough but we have special tools for it)
- Titanium (super strong but we know how to work with it)
- Brass & Copper (great for electrical parts)
- Plastics (from soft to hard types)
- Engineered Materials (composites, special alloys)
Industries We Help with CNC Boring
Our CNC boring service helps many different businesses make better products:
CNC Boring Equipment at Istar Machining
We invest in the best machines so your parts are always perfect:
- High-Speed Spindles (100–3,000 RPM for different materials)
- Powerful Motors (15–40 kW to cut through anything)
- Special Boring Bars (that don’t bend or vibrate)
- Tool Changers (12–24 tools ready to use)
- Computer Controls (that follow your design perfectly)
Technical Details About Our CNC Boring
For the engineers and quality folks, here are the specs:
- Maximum Bore Diameter: Can go up to 500mm (about 20 inches)
- Minimum Bore Diameter: As small as 10mm (less than 1/2 inch)
- Tolerance Capability: ±0.005mm to ±0.05mm (we can do super exact work)
- Surface Finish: From Ra 0.4μm (mirror-smooth) to 3.2μm (still very good)
- Depth-to-Diameter Ratio: Up to 10:1 standard, more with special tools
CNC Boring Services We Offer
Service Type | What It Does | Best For |
Precision Boring | Makes holes with exact sizes (±0.005mm) | Aerospace parts, medical devices |
Deep-Hole Boring | Creates long, straight holes | Hydraulic cylinders, gun barrels |
Counter-Boring | Makes wider openings at the start of holes | Bolt heads, washers |
Back-Boring | Works from the back side of parts | Hard-to-reach areas |
Trepanning | Cuts large holes while saving material | Big openings, saving material |
How CNC Boring Compares to Other Methods
Process | Good For | Limitations | When to Choose |
CNC Boring | Improving existing holes, high precision | Needs pre-existing hole | When accuracy is critical |
Drilling | Making new holes quickly | Less accurate than boring | For rough holes or starting points |
Reaming | Finishing holes to size | Limited material removal | When hole is close to final size |
EDM | Hard materials, odd shapes | Slower, more expensive | For hardened steel or complex shapes |
Why Choose Istar Machining for Your CNC Boring Needs?
We don’t just make holes – we make perfect holes! Here’s why customers pick us:
Super Exact Work
We can make holes with ±0.005mm precision - that's thinner than a human hair!
Smart Computers Do the Work
Our CNC machines work day and night without getting tired or making mistakes
Works with Many Materials
We can bore holes in metal, plastic, and more
Best Tools in the Business
We use special boring bars and cutting tools for perfect results
Solutions for Every Job
Whether it's for planes, cars, or medical tools - we've got you covered
Getting Started with Istar Machining's CNC Boring Services
Ready for perfect holes in your parts? Here’s how:
Send us your design
CAD files work best but drawings are fine too
Get a fast quote
We'll tell you the price and time needed
Approve production
We'll make your parts exactly to spec
Receive perfect parts
On time and ready to use
Contact Us for Your CNC Boring Needs
Ready to get started? Call us, email us, or visit our website. We’re here to make holes that help your products work better!
Istar Machining – Making the perfect hole, every time.
Frequently Asked Question
CNC boring is a special way to make or fix holes in parts. Unlike drilling that just makes new holes, boring makes existing holes better – smoother, more round, and exactly the right size. Our CNC machining service experts use computer-controlled machines to make holes that meet your exact needs.
Drilling makes new holes, but boring makes existing holes better – more exact in size, shape, and smoothness.
We can make holes with ±0.005mm precision – that’s about 1/5 the width of a human hair!
Yes! With our special tools, we can make holes up to 10 times deeper than their width.
Almost anything – aluminum, steel, titanium, plastics, copper, and more. Each material needs the right tools and speeds.
We check every critical hole with precise measuring tools. For important jobs, we use special sensors during machining.
It costs more than simple drilling but delivers much better quality. For parts where holes really matter, it’s worth it!
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