The bernette b64 AIRLOCK is a 2–3–4 thread overlocker/serger with one-step air threading for the looper threads, giving fast, simple setup and professional-quality seams and edge finishes on knits and wovens. With high sewing speed, generous workspace, and comfort features, it is ideal for garment construction, activewear, and home décor projects. Main Features Air-threading system for both loopers at the push of a lever, eliminating manual threading in hard-to-reach areas. 2–3–4 thread stitch capability with up to 16 stitch programs, including overlock, rolled hem, flatlock, and narrow hem. Sewing speed up to approximately 1,300 stitches per minute for fast production while maintaining control. Micro Thread Control (mtc) to fine‑tune the amount of looper thread for precise, flat seams and clean fabric edges. Adjustable differential feed and stitch length for smooth seams on knits and prevention of waviness or puckering. Comfort and Design Large 130 mm (about 5") space to the right of the needle for easier handling of larger pieces. Freearm for sewing cuffs, sleeves, and other tubular items with better access. Super-large slide-on extension table to support bigger projects and improve fabric control. Five bright LED lights illuminating the needle and looper area for excellent visibility while sewing. Color-coded threading paths and easy-access controls to simplify set-up and stitch adjustments. Stitch Options 4-thread overlock for strong, stretchy seams on knits. 3-thread overlock (wide and narrow) for edge finishing and garment construction. 2- or 3-thread rolled hem for lightweight fabrics and decorative edges. Flatlock stitches for decorative seaming and sportswear effects. Included Accessories Standard overlock presser foot installed on the machine. Waste collector for trimmed threads and fabric, attaching neatly to the front of the machine. Slide-on extension table and freearm cover. Needle set, tweezers, needle threader/inserter, and threading wire or tools as specified. Screwdrivers, brush, oiler, and accessory box or storage area for small tools. Foot control, power cord, dust cover, and user manual or quick-start guide.
