Sometimes the cotton is too loose on the bobbin; check this first then try putting the bobbin in again making sure you have threaded it in correctly, hope this helps
SOURCE: bobbin tension
If the looping is happening on the underside, it is your top tension that is to blame, conversely looping on top is bobbin tension.........take a look HERE for detail on cleaning lint buildup.
Top tension should be set around the middle of the range, usually 4 - 6.
I would not advise playing with bobbin tensions, however, you can take the needle plate off to clean the hook race area (where bobbin case sits) ...this is good housekeeping, my wife does this every time she replaces the bobbin....just take it out and clean the bobbin case and the fixed metal hook race with a small brush to remove lint, if there appears to be fine dirty deposits, a cloth or cotton bud (Q tip) moistened (not soaked) with methylated spirit will do the trick.
Bargainbox
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: euro-pro 464xc bottom tension loose
Welcome to FixYa!
Loose bottom stitches come from the top, not the bottom. Seems weird, but that's the way sewing machines work.
The dial tension should be set at the mid range and make absolutely sure that you have the machine threaded correctly. Both things will cause a sloppy bottom stitch.
Thanks!
If you find my solution helpful, I'd appreciate a FixYa rating....
SOURCE: Top thread stitches correctly but bottom thread loops.
FYI---- Loops on the bottom-- problem is in the threading..
Loops on the top--- problem is with the bobbin.
SOURCE: loose bottom stitch on brother se 350
Hi, general rule of thumb:: loops on the top, problem on the bottom.. Loops on the bottom, problem is on the top.. When threading your machine, stop just before you thread your needle, put the presser foot down. Try pulling the thread. If it pulls easily, the thread is not thru the tension wheel right. If it pulls hard, you got it right.
set up counter clokwise thread rotation, set dial tension on #3 to #4, dial stich to # 8 to #12
follow threading so you can have fine sewing.also clean under bobbins from chips fabric and dust.have a nice day,don't forget to rate my fix,ythanks a lot
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