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Re: tension on stitches
Loose bottom stitches mean the UPPER tension has a problem. Pull the thread through the tension assembly and
test it to make sure the tension is working correctly.
(To do this test, adjust your tension setting to normal or medium or 5 or
something in the middle. Raise the presser foot and pull the thread through the
tension. It should pull easily!! Lower the presser foot and pull the thread. It
should pull noticeably harder.) If it does not work this way( the tension stays loose) you will need to set the tension to Zero, open the discs with a small screwdriver and remove the lint or thread which is stuck in there. Sewman7
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Check your stitch sample. The looping under the fabric is most likely the top thread. If so, this is call bird nesting or thread nesting. Most common cause is the top thread is not completely seated in the tension disk.
Remove the top thread from the machine.
ALWAYS RAISE the presser foot and rethread the top thread.
Set the top tension at the midway point (this can be tweaked later).
Test your stitch. Increase or decrease the top tension until the top & bobbin threads meet in the middle of your fabric.
Check your upper threading. Make sure it's between your tension discs. Remember loops on bottom, something is wrong with upper threading/tension. Loops on top something is wrong in the bobbin area (like the bobbin being in upside down or a loose bobbin tension spring)
start by rethreading the top thread with the presser foot UP.
normally loose bottom stitches indicate a problem with the needle thread tension not the bobbin. try removing top thread completely and then rethread machine with presser foot down, if you do it with foot raised auto tension will not function
I would start by re winding your bobbin and making sure that it is done though all the correct tension loops. A bobbin that is wound to tight or loose can cause all sorts of problems. If that has been done then completely rethread the machine from scratch. Now go through and check all your tensions, it sounds like the bobbin tension is too loose and your stitch tension is too tight. Adjust and try again.
Your description isn't very clear. When you say the "bottom stitch is using too much thread" Do you mean you see lots of loopy threads on top of the seam? Or do you mean you see loops on the bottom under the fabric? If your loops on the bottom, that means the top tension is too loose, you've not remembered to put the presser foot down, you have not threaded the top thread properly... Start by rethreading carefully with the presser foot UP. Then do a test stitch, remembering to put the presser foot down. If you still get loops underneath... tighten the tension.
If your loops are on the top of the fabric. loosen the top tension... then do a test seam... and if you still have loops loosen again and repeat. If you start to see loops on the bottom... tighten the tension a bit.
A sewing machine operator can often help themselves when their machine does not operate properly. Here are some simple instructions, which if properly used can save time and mechanics service calls. TROUBLE;UPPER THREAD KEEPS BREAKING; This could be trouble;================Do this; 1.Top tension to tight================loosen tension 1 turn 2.Machine improperly threaded=========check threading 3.Thread twisted on guide post========" 4.Thread twisted out of tension=======" 5.Take up spring bent or broken=======Check action of spring 6.Thread jumped off pull off finger===Check threading 7.Needle bent or burred===============new needle 8.Bad cone of thread==================try another cone TROUBLE;LOWER THREAD KEEPS BREAKING; 1.Bobbin tensionspring to tight=======Loosen tension slightly 2.Bobbin threaded wrong===============check threading 3.Bobbin wound to tight or uneven=====try new bobbin 4.lint or thread on bobbin case=======clean inside case 5.Lint or thread inside hook==========clean inside hook 6.Bobbin case nicked bent or burred===check/change case TROUBLE;MACHINE STARTED SKIPPING STITCHES; 1.Needle bent or burred===============change 2.Needle set in crooked===============Check 3.Thread jumped off take up spring====check threading 4.Thread jumped off pull off finger===check threading TROUBLE STITCHES SHOWING LOOPS; 1.Forming loops on top of cloth=======Tighten bobbin tension ======================================or loosen top tension. 2.forming loops on bottom of cloth====Tighten top tension 3.Bobbin placed in case incorrectly===remove and replace 4.Bobbin thread slipped from under====check threading of tension===============================bobbin case 5.Lint or thread in top tension=======clean between tension discs
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.
you have your thread tension too tight that's why it is pulling the bottom stitch all the way through it looks good from the bottom but not good on top. Its pulled the stitch all the way through the material. I had my own upholstery shop 18 yrs and tension gets you every time.Just loosen the top tension.