Why is the underside of my sewing all knotted up? Every time I sew the thread is bunching/ knotting/ 'birdnesting' on the underside of the fabric. The bobbin holder is clicking and bouncing around an

SOURCE: bobbin not working

Hi steph77....please click on the following URL to view applicable information to correct your issue....good luck my friend. http://www.fixya.com/support/t162553-underthread_going_crazy

Underthread Going Crazy

fixya.com

Underthread Going Crazy Hello ve...

Hassy

• 1388 Answers
• Posted on Feb 24, 2008

SOURCE: bobbin thread bunching

I agree with brodering about the damage to your bobbin case, it should be smooth all over, as the thread travels across the top surface to form a stitch, and the small step on the underside locates it as the hook spins underneath.

Needle strikes often compromise the surface, as will the hook colliding with the under surface... and although it is possible to gently polish off the damage with fine grain wet & dry (black) sand paper (emery paper) there are limits to the success depending on the degree of damage.

While on the subject, ensure the bobbin case and hook race beneath are clean and free of lint or thread.

For a guide as to setting tensions and the rest, look here

SOURCE: Thread tension?

I own this little gem of a machine. It definitely sews a perfect stitch. I'm assuming you own the green 3/4 size machine as denoted by your product number. The half size blue one pictured is incorrect.

Anyway, this machine sews a perfect stitch, due to the oscillating bobbin. Most sewing machines with rotary (drop in) bobbins don't have an easily accessible bobbin tension screw, which means your fabric is usually slightly puckered. Fiddling with only the upper tension helps very little. This frustrates me to no end for sewing long curtains, clothing side seams, etc. Wrong tension causes them to hang with puckers, making them look awful. With the Hello Kitty 3/4 size Janome, there is a screw on the bobbin case which allows you to adjust for every thread diameter perfectly. Always a perfect stitch, if you take the time to adjust this screw.

To adjust the bobbin for a perfect tension, load the bobbin into the bobbin case and thread it through the guide. Holding only the thread between two or three fingers, let the bobbin case dangle below. This will be slightly difficult, because the bobbin will want to fall out of the case. Don't worry, just don't move it around too much and it will stay in long enough for this test. If the metal bobbin case slowly drops lower, unwinding thread as it goes, the thread is too loose. Tighten the screw on the side of the bobbin case a little (about a quarter turn.)

If the bobbin case seems to be dangling firmly, give the thread a gentle tug, lifting up fairly quickly. If it doesn't release a couple of inches of thread, it's too tight, loosen the screw. You know the tension is perfect when a quick, light tug of the thread releases a couple of inches of thread.

SOURCE: bobbin thread keeps breaking

Could well be that the bobbin tension is too tight, you should only just be able to pull the bottom thread through with slight resistence, if it is too tight slacken the screw on the bobbin case anti clockwise about a quarter of a turn at a time and test until you get it right,

SOURCE: I own a Jenome Excel

Hi Sarah,
First, check to be sure you are threading the machine correctly. This accounts for most problems.
Try using new thread and carefully rethread top and bottom . If that doesn't take care of the problem, then check the bobbin case and hook for scratches, burrs, nicks, etc.

Hope this helps. If it does, I'd appreciate a 4 thumbs up. Thanks,

Handie Andie