Question about Janome Sewist 525S Mechanical Sewing Machine

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What to do if the bobbin thread is showing up on top of fabric

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Check the bobbin to be sure the thread is feeding from the spool in the correct direction and through the guides on the side of the bobbin case.

If this is a rotary bobbin (side or front loaded) and not a drop-in (top loaded), you can test the bobbin tension after putting it into the bobbin case. Take hold of the end of the thread, and holding the bobbin case in the flat of the other hand, lift the thread up. If the thread pulls freely from the case, the tension is too loose. If the thread pulls the bobbin case up like a yo-yo and when you give a gentle tug, the thread feeds from the case with a bit of resistance, the tension is okay.

To adjust the tension on a bobbin case, first mark the **** in the screw on the side of the case and the case with a tiny dab of nail polish. This will provide an indication of where you began. Turn the screw to the left to loosen the tension and right to tighten the tension.

Be sure to always thread the machine with the presser foot up.

Set the top thead tension to the number recommended for the type of fabric that is being sewn.

If the problem continues, there is a possibility the timing needs adjusted and this needs to be done by a sewing machine tech.

Posted on May 11, 2010

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1 Answer

My bottom tention of Bernina Deco 340 is to loose. How to I correct is. The top treat shows to much at the bottom


Um, the top thread is showing on the bottom of the fabric? The top tension is too loose. The two threads create a tension battle, one pulling against the other. To pull the bobbin thread up, tighten the top tension. The tension is accurate when the two threads meet "in the middle" of the fabric. On thinner fabric, you might see a tiny spot of bobbin thread on the top and a tiny spot of top thread on the bottom.

Aug 24, 2017 | Bernina Sewing Machines

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I have a brother PR1000 and on the test stitch there is too much bobbin thread showing underneath. do I adjust the tension in the top thread or the bobbin tension?


Yes Adjust to more tight see what it'll do.
Bottom bobby is too tight or upper thread control is too lose.

Good luck

Mai

Jul 12, 2017 | Brother Sewing Machines

1 Answer

Upside down stitching


Am having a difficult time picturing this. Sounds like the upper thread is creating loops under the fabric and the bobbin thread is showing on the top of the fabric.

Make sure to use a brand new needle.

Remove the thread from the machine
ALWAYS raise the presser foot and rethread the upper thread.
Make sure the thread path is correct.

Check that the bobbin is turning the correct direction in the bobbin case and the bobbin thread is threaded through the bobbin tension correctly.

Set the upper tension to the midway point (factory standard), however, this setting may need to be tweaked for your particular machine.

Bring the bobbin to the top of the project Before beginning to stitch.
How and Why to Bring up the Bobbin Thread

Retest--begin sewing slowly.

If the upper thread is still showing on the other side of the fabric, the tension is too loose. If it is pulling the bobbin thread up to the top of the fabric, the upper tension is too tight

OR the bobbin thread tension is too loose. (CAUTION: make only small adjustments to bobbin tension--1/8 of a turn at a time!!! It also helps to mark the screw groove location with magic marker on the bobbin case BEFORE making any changes so you can back it out and return to the original setting.)

Bobbin Tension How and Why Tension is Adjusted

Understanding Bobbin Tension

Understanding Thread Tension Threads

Sewing Lesson 10 How to Fix Tension on Your Sewing Machine

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Oct 05, 2016 | Sewing Machines

1 Answer

Top thread covers bobbin thread makes. Stitches very thick


Remove all the thread from the machine.

Install a brand new needle.

ALWAYS RAISE the presser foot during the threading process and rethread the machine from the beginning. (Check that the upper and bobbin threads are threaded correctly in your machine.)

Set the tension dial to the midway point. This is a factory standard setting but each machine may vary.

Test your machine. The ideal tension is when the upper and bobbin threads meet in the middle of the fabric. If the upper thread is showing on the bobbin side of the fabric, the upper tension is too loose. However, if the bobbin thread is showing on the top of the fabric, the upper tension is too tight.

Tension is not static--whenever you change projects, ie fabric, thread, needle, you may need to test the tension on some scrap project fabric first. Get the tension adjusted before stitching the project.

Make sure you clean and lubricate your machine regularly to keep it operating--consult your owner's manual and use only good quality sewing machine oil (NO 3-in-1, cooking oil, WD-40, or old brown stinky sewing machine oil).

If you are still having issues, take it for service.

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May 27, 2016 | Sewing Machines

2 Answers

Why is the bobbin thread bunching up?


if your saying that your bobbin thread is balling up under the platen plate , this is a sure sign that your top thread tension is not correct and there isn't enough tension to pull the bobbin thread up from below

Mar 24, 2016 | Sewing Machines

2 Answers

What makes the stitches loose? How do I make them tight?


You should have a tension knob (1 to 10) on the machine, the lower the number the tighter the tension.

Jan 09, 2016 | Sewing Machines

2 Answers

Breaking cotton on top and bobbin


Try loosening the tension for that bobbin

Dec 15, 2015 | Sewing Machines

1 Answer

The stitch which should be on the bottom seems to be on the top


Difficult question to understand and hard to address without knowing the machine & model.

Do you mean the bobbin thread is showing on the top of the fabric? If so, try loosening the upper tension and test. The mid-point between the high and low number is the most common factory setting for upper tension, although that should be adjusted to suit the fabric, thread, and your project. The ideal tension is reached when the upper thread and bobbin thread meet in the middle of the fabric (ie, bobbin thread does not show on the top and needle thread does not show on the bottom.

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Nov 12, 2015 | Sewing Machines

2 Answers

Bobbin thread shows on embroidery pattern


The bobbin thread is being pulled too hard by the top thread. The idea is to get an even pull similar to a tug of war. When it is even the thread will form a knot in the middle of the fabric.
To fix this so the top thread isn't pulling too hard lower the tension of the top thread. This should fix it.

May 08, 2015 | Janome Memory Craft 10000

1 Answer

Adjust tension


The tension of the top thread and bobbin thread are in a "tug of war". If the top is "winning" or too high then the bottom thread will be showing on the top of the fabric. If the top is "loosing" or too loose then the top thread will be pulled through the fabric and show a lot on the bottom. They must be evened out so the "tug of war" is even so the knot is in the middle of the fabric.
START WITH BOBBIN FIRST: Remove bobbin and bob from finger. When you have it adjusted right then the bobbin will extend one inch when you bob it. If you can't bob your bobbin you will have to make an approximate and replace. You may have to do this a couple times to get it right.
WHEN IT'S RIGHT: The bobbin and top tension are equal without being too much pull on both that causes the fabric to pull together.

Jan 31, 2015 | Sewing Machines

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