You’ve just finished sewing a knit top, but the seams are already fraying. Or maybe you’re staring at a pile of fabric, dreading the tedious process of threading a serger’s loopers. The Bernette B64 Airlock serger promises to solve these problems with its automatic air threading and professional-grade features. In this review, we’ll explore whether this machine lives up to the hype and if it’s the right investment for your sewing room.

We’ve spent hours evaluating the Bernette B64 Airlock, comparing it to other models in its class, and checking its performance on various fabrics. This guide is designed for sewists who want a reliable, high-performance serger without the steep learning curve. We’ll cover everything from its threading system to its stitch quality, helping you make an informed decision. For more options, you can also check out our best air thread serger roundup.

Buying Guide: What to Look for in a Serger

Air Threading System

One of the biggest hurdles in serging is threading the loopers. Traditional sergers require needle-nose pliers and a lot of patience. An air threading system, like the one on the Bernette B64 Airlock, uses a burst of air to pull the thread through the looper, making setup a breeze. This feature is a game-changer for beginners and a huge time-saver for pros.

When evaluating a serger, pay close attention to how easy the threading process is. Look for color-coded thread paths and lay-in tension slots, which simplify the process further. If you’re new to serging, this can be the difference between a frustrating experience and an enjoyable one.

Stitch Options and Versatility

Sergers come with a range of stitch options, from basic overlock to coverstitch and chainstitch. The Bernette B64 offers 16 built-in stitches, including 2/3/4-thread overlock, which covers most garment sewing needs. Some models, like the Bernette B68, also add a 5-thread option for extra strength.

Consider what types of projects you’ll be working on. If you sew knit fabrics, a coverstitch is essential for hems. If you work with heavy fabrics, a 5-thread option might be beneficial. For a deeper dive into different serger types, check out our guide to the best serger for home use.

Workspace and Lighting

A well-lit workspace is crucial for precise stitching. The B64 Airlock features five LED lights that illuminate the entire sewing area, reducing eye strain during long projects. Additionally, a large working area to the right of the needle, like the 130mm space on the B64, provides ample room for handling large pieces of fabric.

If you plan to tackle quilting or home décor projects, a spacious table and good lighting are non-negotiable. The Bernette B64’s extension table and bright LEDs make it a pleasure to work with, even on bulky items. For more on heavy-duty options, see our best heavy duty serger recommendations.

Final Thoughts

After thoroughly reviewing the Bernette B64 Airlock, we can confidently say it’s a top-tier serger that lives up to its name. The air threading system is genuinely revolutionary, and the stitch quality is impeccable. Whether you’re a beginner looking for an easy entry into serging or a professional needing a reliable workhorse, the Bernette B64 Airlock Overlocker Sewing Machine is an excellent choice. For those who need even more power and stitch options, the Bernette B68 Airlock Serger Sewing Machine offers a step up with its 5-thread capability and included accessory kits. Both machines are built to last and will elevate your sewing projects to a professional level.

Frequently Asked Questions

What is the difference between the Bernette B64 and B68 Airlock sergers?

The B64 is a 2/3/4-thread serger with 16 stitch options, while the B68 adds a 5-thread capability and a higher maximum stitch speed. The B68 also comes with additional accessories like a coverstitch foot kit. Both feature air threading and LED lighting, but the B68 offers more versatility for heavy-duty projects.

Is the Bernette B64 Airlock good for beginners?

Absolutely. The air threading system eliminates the most intimidating part of serging, making it incredibly user-friendly. The color-coded thread paths and lay-in tension slots further simplify setup. Plus, the machine’s sturdy construction and smooth operation help new sewists achieve professional results from the start.

Can the Bernette B64 handle thick fabrics like denim?

Yes, the B64 is a heavy-duty serger that can handle thick materials like denim, canvas, and multiple layers of fabric. Its powerful motor and adjustable presser foot pressure ensure even feeding and clean stitches. For more on heavy-duty performance, check our Bernette B68 Airlock review.

Does the Bernette B64 come with a coverstitch function?

The Bernette B64 is primarily an overlock serger, but it can perform a chainstitch, which is similar to a coverstitch. For a dedicated coverstitch machine, you might consider the Bernette B62, which offers 4 coverstitch options and 3 chainstitch options. However, the B64’s chainstitch is sufficient for many hemming tasks.

In 2026, the Bernette B64 Airlock remains a top choice for sewists seeking a reliable, feature-rich serger. Its innovative air threading and robust build make it a worthy investment for years of creative sewing.