Cylindrical components present unique challenges during the manufacturing process. While an experienced CNC machining company is well-equipped to handle these, the design phase plays a crucial role in determining the component's functionality, machining efficiency, and overall cost.
In this blog, I’ll provide insights into how cylindrical parts are made and share my top three design considerations that can help you optimize your designs for better performance and cost control.

**How Are Cylindrical Components Manufactured?**
At Penta, we often get asked whether all cylindrical components are simply turned on a lathe. While turning is common, it’s not always the only method. Some features require milling, even on a cylindrical part. That’s where mill-turn machines come in — they combine the functions of both lathes and mills, allowing complex parts to be machined in one setup.
As a designer, you don’t need to worry about the exact manufacturing method. Your CNC machining partner should evaluate your design and choose the most efficient and cost-effective approach. The goal is always to balance precision, time, and budget.

**Designing Cylindrical Components**
While the manufacturer handles the production, you have control over the design. Optimizing your design can significantly improve function, reduce machining time, and lower costs. Here are my top three design considerations:
**1. Wall Thickness**
Thin-walled cylindrical components can be tricky. If the wall is too thin, it may deform when held by the chuck or during machining. This can lead to issues with maintaining the correct radius and surface finish.
An experienced CNC machinist can still work with thin walls, but it typically requires more setup time and careful handling, which increases costs. So, ask yourself: Is the thin wall really necessary? If not, choosing a thicker wall can save time and money.

**2. Length of the Cylinder**
The longer the cylinder, the more likely it is to wobble or flex during machining. This can cause inaccuracies and affect the surface finish. To counter this, a center can be used to hold the part at both ends, improving stability.
However, using a center adds complexity and may increase machining time. It’s important to consider this during the design phase to avoid unnecessary delays and costs.

**3. Feature Placement on Either End**
If features on both ends of the cylinder need to match precisely, it can complicate the machining process and increase costs. However, if the orientation isn't critical, specifying "orientation not important" gives the manufacturer more flexibility, leading to a more efficient production process.
**Conclusion**
When designing a cylindrical component, you don’t need to worry about the manufacturing details — your CNC machining supplier will take care of that. What matters is designing with manufacturability in mind. This helps ensure efficiency, accuracy, and cost-effectiveness.
Need help with your design? Partnering with a CNC machining company that offers design advice can make a big difference. A good supplier will guide you through balancing form, function, and cost.
**Partner with Penta**
Penta has extensive experience in both turning and milling. We offer valuable design support and use advanced mill-turn machines that combine the best of both worlds. This allows us to produce complex cylindrical parts faster, more accurately, and with greater efficiency.

If you'd like to discuss how Penta can assist with your next project, give our team a call at 023 9266 8334 or email us at sales@pentalprecision.co.uk. You can also book a Discovery Call with us here.

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