Attaching elastic tape and hemming a knit are related tasks, but they are not the same operation. Elastic attachment gathers or controls a garment edge; a knit hem turns and secures the fabric while allowing it to stretch. Decide which job you are doing before choosing the stitch, foot, and amount of stretch. There is no universal elastic length, stitch number, tension value, or needle setting for every fabric and machine.
Attaching elastic tape#
Measure the garment and elastic for the intended fit, then test the planned length on the actual materials. Brother’s procedure for the models listed on its support page uses several pins to position the tape evenly, zigzag foot J, and the machine’s documented stitch. While sewing, the procedure stretches the elastic so it matches the fabric length. Brother cautions that the needle must not strike a pin. That sequence is a Brother example, not proof that foot J or the same stitch works on another machine.
Marking several control points helps distribute the elastic instead of stretching only one section. Sew a short sample first and check the edge while relaxed and gently extended. It should lie as intended without skipped stitches, broken thread, or a distorted fabric edge. If the sample waves or stretches unevenly, stop and reassess the measured fit, feed, stitch, and handling rather than pulling harder against the machine.
Hemming a knit#
For a knit hem, choose a stitch that the exact machine manual identifies for stretch fabric. Some machines have a named stretch setting; others use a different pattern or control. A straight stitch may restrict movement on some knits, while a wide zigzag can change the visible finish. Use the manual and test the selected seam on scraps folded like the actual hem.
Choose a needle for the fabric and thread. SCHMETZ describes Jersey or ball-point needles for knits and some stretch fabrics, and Stretch needles for elastic materials and highly elastic knitwear. Check the machine’s approved needle system and select size for the thread and material. Replace a damaged or dull needle before testing.
If you plan to use a twin needle for a folded hem, choose only a stitch that the exact machine chart permits for twin-needle sewing. Brother’s support answer for its listed home-sewing models, including the CS7000X, says to seat the needle fully against its stopper, keep stitch width at 5 mm or less, and thread by hand from front to back because the automatic needle threader cannot be used. After setting the width, turn the handwheel slowly and check that neither needle touches the foot or plate. These are Brother-specific checks, not a width limit or permission rule for other machines. Confirm the needle spacing and chart markings for your model, then sample on the same folded hem before sewing the garment.
Check the sample before sewing the garment#
Stretch the sample as the finished garment will be worn, then inspect whether the stitches remain intact and whether the fabric recovers. Check the front and back for tunneling, skipped stitches, loops, or thread damage. If using a special foot, twin needle, or stabilization product, verify the machine supports it and follow that product’s exact instructions. A needle or foot that clears on a single layer may not clear the folded hem.
For the stitch-family decision behind knit seams, see straight, zigzag, and stretch stitch choices.