Question about Bernina 1008

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The tension on my 1008 is not working correctly. Knots are forming on the underside of the fabric. I have tried adjusting the tension all the way up to 9 and I get the same result.

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Refer to your manual for the following:

Cleaning and lubricating (maintenance section).

Threading - sometimes we forget to have the presser foot up and this can have a negative effect on the stitching.

Tension settings.

Needle size and style for the type of sewing being done.

If the problem persits, the machine needs to go into the shop for service. Take a sample of the stitching with you so the tech can see what is or is not happening.

After it has been serviced, ask for a "test-drive" before taking it home.

Posted on Apr 29, 2010


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1 Answer

Keeps knotting up in the bobben won't see what is the tention setting for this machine

If there are wads of knots on the underside of the fabric, most likely it's because the top thread is not completely seated in the tension disk (called bird nesting).

Remove the top thread from the machine.
ALWAYS RAISE the presser foot and rethread from the beginning.
Verify the thread path is correct.
Test your machine.

The factory standard tension is placing the top tension at the midway point. However, this will change as each machine is different and will change with use.

To achieve the best tension, the top & bobbin threads should meet in the middle of the fabric.

Jul 13, 2017 | Sewing Machines

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How to adjust the tension

The standard factory tension setting is the midpoint--midway between the highest and lowest. Tension will need to be adjusted to suit the needle, thread, and fabric for the current project. A sewist should be comfortable making these adjustments to achieve the best tension. The correct tension is achieved when the upper thread and bobbin thread meet in the middle of the fabric--neither the bobbin thread is pulled to the top of the fabric nor is the upper thread being pulled to the underside of the fabric.


Oct 21, 2015 | Elna 2005 Mechanical Sewing Machine

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Setting the tension bernett46

try changing the needle--one for the fabric being used--and inserted correctly into the needle holder.. some needles are flat and some are around

rethread the machine top and bobbin with new thread

check your thread path for burrs

Mar 14, 2015 | Sewing Machines

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Loose top thread bernina 1008, tension problem but no solutions yet...

Are you sure you are getting the top thread between the tension discs? You should be able to tell the difference when you lower the pressed foot.

Jan 27, 2013 | Bernina 1008

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Machine starts to sew then upper thread knots up on underside of fabric

Do each of these steps one at a time and then test a seam on scrap fabric of the same type.

1. Make sure you thread the machine correctly with the feed dog lever in the up position. (this opens the tension discs, allowing the thread to seat correctly)

2. Make sure your needle and thread are the correct size for the fabric and that you've oriented the needle correctly and have it fully seated into the needle bar.

3. When beginning to sew a seam, always grasp both threads and hold them as you begin to sew.

4. Loops on the bottom of the fabric means that the upper tension is too loose. Tighten the upper tension a little at a time until loops disappear.

Good luck.

Sep 22, 2012 | Brother XL-2610

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Pfaff machine -sews with thread loops forming on the underside of the fabric.

This is usualy a thread tension problem. Adjust the upper thread tension first. If tightening the upper thread tension doesn't work, then adjust the bobbin holder (lower thread tension) check with the user manual for your specific machine for the correct procedure.

May 17, 2011 | PfaFF Sewing Machines

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When sewing, thread knots under fabric sometimes. Other times the stitching is missing.


When you have stitch problems try to remember TNT or TTN.

1. Raise your pressure foot and re-thread your top thread. (Thread)
2. Replace your needle or at least check it for being bent. (Needle)
3. Adjust your top tension. (Tension) Get it? TNT.

4. Make sure your bobbin is in correctly. If it is upside down or had the thread unspooling off the correct side.
5. Make sure your needle and your thread are appropriate for your fabric application.

Good luck.

Mar 13, 2011 | Euro-Pro Sewing Machines

1 Answer

I can't find the tension adjusting spring on my brother 2600i

1Sew a test seam. Ads by Google
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' + '' + google_ads[i].visible_url + ''; } s += ""; document.write(s); return; } google_ad_channel = '+7733764704+1640266093+9911500640+9665908481+7416705818+8962074949+8941458308+1258424658+7122150828' + xchannels + gchans; google_ad_client = "pub-9543332082073187"; google_ad_output = 'js'; google_ad_type = 'text'; google_feedback = 'on'; google_ad_region = "test"; google_ad_format = '250x250_as'; //--> google_protectAndRun("render_ads.js::google_render_ad", google_handleError, google_render_ad); 2Observe the seam on the top and the bottom surface using a magnifying device if need be.
  • 3Find the position of the knots.
  • 4Tighten the tension and "pull the knots up" if the knots appear on the bottom side of the sewn seam.
  • 5Loosen the tension and "drop the knots down" if the knots are on the top surface.
  • 6Sew a test on the fabric you will be using. Tensions often have to be adjusted when changing fabric types and weights.
  • 7Continue adjusting the tension and inspecting the seam until your seam is balanced.
  • Apr 03, 2010 | Brother XL-2600I

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    Hi, my sewing machine is making a ball of thread under the material we'resewing i was told i might need to adjust the tension i don't have the manual booklet.

    Try adjusting the numbered knob on your machine...this is your tension control. If you have knots on the underside of your fabric you want to turn this knob to a higher number until the knots dissapear.

    Aug 24, 2009 | Kenmore 15516 Mechanical Sewing Machine

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    Bernina 1008 sewing machine making huge clumps of loops on underside of fabric. have tried moving screw on bobbin in two opposite directions without a sign of improvement.

    Hi: You have threaded the machine incorrectly. Rethread the machine with the presser foot up to the needle, pull the thread (loose) and drop the presser foot while pulling thread, thread should get tighter, then thread needle and machine will work fine. Make sure the top tension is set at where you normally have it, probably about #4 or #5

    Jan 08, 2009 | Bernina 1008

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