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Bernina nova foot tension adjustment - Bernina 1008

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There is no presser foot tension adjustment on the 1008. Please restate the request as to why you would want to increase presser bar tension.
SewTechnical Home

Posted on Nov 27, 2014

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Posted on Jan 02, 2017

bargainbox
  • 1388 Answers

SOURCE: tension on my artista 200 bernina machine

Please TRY the solution BEFORE giving your considered rating.
Specific detail on bobbin case adjustment (with picture) near halfway down reply, the remainder will help you achieve a balance of top and bottom tensions.

Ensure that all is clean and free of lint and jams, this is the most likely cause....now for tension troubleshooting .......

This solution is for tension problems...if you cannot form any sort of stitch, the issue is quite different, so please let me know if you need a different problem solved.....

It is quite long, but just work through each section in order.

The "knotting up" can reveal a lot. If you have loose threads on one side or the other, the tension on the opposite side will be the culprit.

QUICK SUMMARY FIRST:
Ensure sharp new needle,
Thread guides and Bobbin are Clean & Clear of lint
Set Top Tesion to 4 ....then....
Balance Bobbin to suit.

TOP THREAD TENSION:
If the looping threads are on the underside as you sew, it is the top tension. Top tension ought to be between 4 & 6 (this variation to allow for the different weights of fabric in your projects).

IS YOUR NEEDLE SHARP ?
If you are using a needle that has seen quite a deal of work, or you suspect it may be blunt, change it for a new one !

TOP TENSION & GUIDES:
Make sure that when you thread the machine the presser foot is up so the thread goes between the discs and not to one side, top tension between 4 and 6, and that you have threaded through all the guides, including the last one, usually on the needle arm, just above the needle clamp.

It may be there is lint trapped between the discs, this will keep them slightly apart and reduce the actual tension, sometimes dramatically.

If tensions appear correct, and the thread is definitely in the channel between the discs, but still too loose and looping, try raising presser foot and remove your thread.

Now, with a 2" (50mm) wide strip piece of fabric 8 - 10" (20 - 25cm) moistened with methylated or denatured spirit, gently insert the fabric strip and clean between the discs with a see saw / to and fro action.

In the worst cases, gentle use of a needle to pick & remove the jam may be necessary, but be very gentle and make sure the tension is set at Zero and the presser foot is raised, (to disengage tension plates).... do not gouge or score the plates, they need a polished surface to work correctly.

BOBBIN TENSION:
Far less common, but if the loose threads are on the top, it is bobbin tension that is loose, it too may have lint in the spring and be giving a "false" tension.

I would not recommend fiddling with bobbin tension without good reason, it may end up with missing small screws and spring pieces, however, you can take the needle plate off to clean
the hook race area (where bobbin case sits)

...this is just 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 is a significant amount of lint, use a vacuum and small brush to get the worst.

Then wipe all this area with a cloth or cotton bud (Q tip) moistened (not soaked) with methylated spirit, especially if there appears to be fine dirty deposits....oil and lint combine to conspire against you.

If it seems likely that you ......really ....do .....actually .....need .....to adjust the bobbin case, first check there is no lint trapped in the metal spring where the thread is tensioned.

TOP LOADER:
Drop-in Bobbin case will look similar to this image with the tension screw in the middle of the metalwork....

4c76dc1.jpg ...the other screw at one end is holding it all together, so beware....it is not a tragedy to undo the whole lot and clean it, but very gingerly and lay the bits out in sequence and orientation, or you risk tearing your hair out !

FRONT LOADER:
....this is a bobbin case from a front loading machine and works in a very similar fashion to the top loader with drop in bobbin, again, if you dismantle it, take care so you can put it all
back properly.
165ca5c.jpg FINISHING UP
GETTING THE BALANCE RIGHT:
When you are certain there's no trapped lint in top tension or bobbin, set the top tension to 4 and the bobbin tension to a point where you just begin to feel resistance.

Try using good quality thread of contrasting colours so you can more easily spot the changes.

Set your zigzag to one width less than maximum (eg. 5 of 6 ...or... 4 of 5 etc) and sew a sample for a few inches and check the result.... adjust the bobbin tension screw very little at
a time, perhaps 1/16 of a turn.

You may find you are playing with this balance for some little while and if you are putting the needleplate on and off each time begin to think it cannot be correct to do this.....BUT....it is,
and eventually, you do get a "feel" for the correct tension and then it happens quite quickly.....as a user you won't be doing it very often unless there is lint built up (or are there small hands at work around the house !?!?!)

OTHER ISSUES:
If you live near the ocean as we do, salt air can play havoc with metalwork inside and out, so to help minimise this, keep a few small packets of dessicant (silica gel) in your machine
case....no case ? then make some sort of cover !

Same applies in any damp or humid environment, keep your machine dry and dust free.

Budget for a proper full service every couple of years (more often if heavily used) and if you don't use your machine for a few years, be aware that old oil will dry out and combining with
dust and form a "clag" like glue (another reason for some sort of cover, even a teatowel !)

FINALLY, A WORD ON THREAD:
If it is worth spending the time, energy and money on making something that you would like to give lasting enjoyment......use quality thread, .......it may seem to cost a little more at the
time, but the results, ease of use and added longevity will be worth the extra, and as a bonus, your tension troubles may be fewer and further between, because there is a more consistent diameter with good thread, and less compensating to be done by your tension plates and less thread breaks

bargainbox.com.au

Posted on Aug 23, 2009

  • 166 Answers

SOURCE: How do you adjust the tension on a Bernina 180

There are two tension adjustments, which should be done with a proper set of weight gauges - top and bottom thread tension should be carefully balanced to get the best stitch formation. It is best that you assume the top tension is correct and adjust the bobbin tension to match. Load the bobbin with thread of one colour and put a spool of the same thread but a different colour on the top. Thread-up the machine, load the bobbin and sew-off a satin-stitch on max width zig-zag. In this configuration, there should be a very small 'bead' of the top thread showing along each side of the satin-stitch on the underside of the material. If there's excessive top showing, the bobbin tension is too high and if none, the bobbin tension is too low. To adjust the tension, remove the bobbin case and you will see a spring around the edge with two screws through it. One of the screws holds the spring in place and the other adjusts the tension - this is furthest from the edge of the spring and is in a small 'cup' in the spring itself. To reduce tension, turn the screw VERY SLIGHTLY anticlockwise and to increase it turn it clockwise. Make very slight adjustments and re-check sewing-off the satin-stitch every time until you get the required thin line of top showing down each side of the stitch on the underside. Ideally this should be done with Mettler Metrosene thread, but as we're just balancing against the top tension, it shouldn't matter too much provided you use a good thread top and bottom.

Posted on Mar 12, 2012

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I have Bernia 180. The bottom thread is puckering. Top thread is perfect. I cannot find help in manual. Please help


Check that the bobbin is inserted turning the proper direction in the bobbin case and that the thread is threaded correctly through the tension control on the bobbin case.

Make sure the upper thread is threaded correctly. The factory standard upper tension setting is midway between high & lower number although this may need to be tweaked for your particular machine.

If the machine is still pulling the bobbin thread too tight, you can try tightening the upper thread tension. If it still isn't resolved, you may need to loosen the bobbin tension.

You might also want to check the presser foot pressure on your machine. That generally needs adjustment when changing from thicker to thinner fabric and vice versa.

Manual: BERNINA artista 180 Support BERNINA

Bobbin Tension How and Why Tension is Adjusted

Understanding Bobbin Tension

Understanding Thread Tension Threads

How can properly adjust my tension

Sewing Lesson 10 How to Fix Tension on Your Sewing Machine

...

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Bernina Deco 330 embroidery machine bobbin case tension.


There are tests to perform for testing and adjusting bobbin tension. There really aren't any "specifications" other than adjusting it until the bobbin drop test is where it is normally recommended.

adjust bobbin tension Google Search


P.S.--be sure to ALWAYS raise the presser foot when threading the upper thread to insure the thread seats completely in the tension disk.
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Why is the top thread on my 830 bernina bunching on the bottom?


The top thread has no tension or not enough. Check to make sure the top tension is going through the tension disc by giving a light pull when the foot is down. When the foot is up there shouldn't be resistance. Start at a setting of four and adjust as you need to.

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Bernina nova foot pressure


The presser foot pressure is not adjustable on the 900 Nova and is not necessary with any Bernina models from the 117L through the 1630 series. If the presser foot bar is sticking so that it is sluggish to respond to the needle plate, the presser bar and bushings will need to be cleaned of oil varnishes in order to function properly. (99.9% of the problem)
The other potential problem although unusual, is that the machine frame has been damaged from a drop or impact, causing the presser bar frame bearings to be out of alignment, hence a sticking shaft condition. You do not want to attempt to correct this as you will likely ruin the machine. Suggest contacting a specialist

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The Bernina 1008 the least expensive way to cure the problem is to purchase a newer style foot control and cord. In Canada about $99

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Bernina walking foot that came with my Bernina QE 440. I have installed the walking foot correctly, feed dogs up, but quilt layers don't seem to 'feed' and stitches are tiny, regardless of the setting. I...


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Bernia machine tread tension will not adjust


Thread the machine with the presser foot up. This will open the tension control. Set the tension to around 4 and then lower the presser foot to see if this helps. If not, you need a certified Bernina repair person to take a look at the machine.

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1 Answer

Bobbin tension


Bobbin Tension Adjustment:

1. Do you have a genuine Bernina bobbin casing and not an Oriental copy? If yes, proceed as follows:
2. To set the bobbin tension, wind a genuine Bernina bobbin with Metrosene thread, type 1161 white thread as your "gaging thread". Load the bobbin case so that the bobbin turns CW. Attach the bobbin case to the hook body from the machine. Wind a couple of revolutions of thread around your index finger with the assembled bobbin case and hook body dangling about 6" to 12" below your finger. Gently and rapidly move your finger back and forth in a "sideways" motion about 1/4" to create a gentle vibration on the bobbin assembly. (Do not shake the bobbin assembly up and down). When the tension is right, the bobbin assembly should fall slowly and as you stop the movement, the assembly should stop.
The adjustment is found on the small screw, holding the flat tension spring against the bobbin case. If the tension is too tight, one must loosen the screw (past) the desired location and always make the adjustment by tightening to the correct position.

There are other checks for tension imbalance and associated problems on the bobbin case that I won't go into here. For further information I can help you later on.

Top Tension Adjustment:

1. The top tension rarely changes and can be depended on throughout the life of that machine providing that tension assembly is maintained occasionally. This can be done by blowing out the tension disks with the presser bar lever in the up position. One can also drag or pull a piece of sized percale or muslin through the disks with the presser bar lever in a down position. Perhaps both methods can be employed.
2. Load the top of the machine with Metrosene 1161 thread in a dissimilar color. I prefer to use a pastel color so as not to create an optical illusion of imbalanced tension.
3. Sew a satin stitch (.25 on the Nova 900) in sized cotton muslin with a thin piece of paper between two plys of fabric. The width should not exceed 4.5mm (standard width on the 900 Nova), however the newer machines have wider stitch widths so one must adjust as specified. The result will be a slight amount of top thread in symmetric lines on both the right and left sides of the satin stitch.

Typically, the top tension will not need adjusting. If the Nova 900 needs adjustment, please ask for additional help.

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