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Forum > Sergers, Coverstitch and Blindhemmers > Coverlock locks up when hemming over side seam ( Moderated by CarolynGM, Deepika)

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Coverlock locks up when hemming over side seam
Sunshine12242
Sunshine12242
Member since 6/7/11
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Date: 10/5/13 6:33 PM

It seems that my machine works great until I get to a side seam and then it jams and become stuck until I move the wheel very slowly over the seam.

I use an accessory on my sewing machine to get over jean hems and wonder if this is my problem; if so, could I use the same accessory on my serger?
Thank you.

heathergwo
heathergwo  Friend of PR
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Date: 10/5/13 6:44 PM

What type of serger do you have? Model name & number would be helpful.

Is this a new problem? Did it ever do this before?

Finally, if it's a foot for your SM, I doubt it will work on your serger, but you said "accessory", so maybe it might... I'd certainly give it a try!

------
Brother Innovis 1250D
Babylock Enlighten
Singer Curvy 8763
Brother 1034D
Janome 385.19606
Brother 2340CV

Sunshine12242
Sunshine12242
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In reply to heathergwo <<


Date: 10/5/13 6:52 PM

I have a Babylock Evolve and have read hints on blogs about a "hump jumper" and think that it could be similar to the plastic small square that fits in back of the sewing machine foot to raise it up.

I have had this problem a few times before, but now it is happening every time I go over a seam.

Thank you

Datcat23
Datcat23
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Date: 10/5/13 7:58 PM

Coverstitch machines are very touchy when to comes to stitching over seams, and because the looper mechanism is very different to a bobbin system, you really don't want to force the issue. There are a number of things you can do to improve the stitching.

You need to invest in a block of wood (or maybe an old cutting board) and a small rubber/silicon mallet (or a hammer with some fabric wrapped around the head). Lay the fabric onto the wood, and using the mallet, firmly bash the seam until its really flattened.

When folding up the hem of a t-shirt, at the point where the fabric folds, snip the seam allowance (not the seam). As you are folding up the hem, "nest" the seam allowances, so that they lie alongside each other, rather than on top. This provides a much less bulky hem and its a good look regardless of whether you are using a CS or not.

When binding necklines, snip back the seam allowances at shoulders, to very close to the seam, taking the bulk out of the neckline. Knits don't fray, so you don't have to worry about a seam unravelling, and the coverstitch itself provides an extra layer of seam securing anyway.

I am not sure about your accessory ...... but make sure you are preparing your fabric well first, and you may find its not necessary.

------
the barefoot seamstress ..... smelling vaguely of lavender and mothballs, and desperately craving chocolate.
www.castley.net/datcat

heathergwo
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Date: 10/5/13 9:50 PM

Yes, I've heard of those "hump jumpers" as well... not sure if they make one for coverstitch machines.

I'm surprised that your BL is having problems, they are supposed to be one of the best... maybe it needs a tune-up??

------
Brother Innovis 1250D
Babylock Enlighten
Singer Curvy 8763
Brother 1034D
Janome 385.19606
Brother 2340CV

BeckyC
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Date: 10/5/13 10:00 PM

I have the Janome Coverpro CPX1000 and I have used the hump jumper to get over those thick seams - with no problem. I also learned that if I dial the differential down to a negative setting as I approach a seam I don't get bunching at the seam intersections. Whacking the seam with a hammer also helps, just be careful that you won't be leaving an imprint on your fabric. If you whack too hard you can damage the fabric. I'd trim seam allowances as much as possible before whacking your fabric. When you whack it, steam it first and then try a seam clapper which is wooden and is not as volatile as a metal hammer head.

edited to say: I use the hump jumper that I use with my sewing machine not a special one for the coverstitch machine.
-- Edited on 10/5/13 10:02 PM --

------
I feed my soul by the stitches I sew.



BeckyC
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Date: 10/5/13 10:01 PM

P.S. Maybe you need a fresh needle and/or a larger size needle. When you go through multiple layers of fabric a larger needle will help penetrate the layers.

------
I feed my soul by the stitches I sew.



beauturbo
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In reply to Sunshine12242 <<
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Date: 10/5/13 11:08 PM

I have same one, and even though I think it works real good, it is still like all the others in the same way, that if you really got a big thick lump of fabric there, that can/will happen.

So I think pounding down and grading your seams is a good idea too. Also when you got something like that, the side seam is pressed in one direction first. I do think it's better to come at it and into/over it, in the opposite direction than it is pressed most times, but try both.

I actually don't think anything wrong with turning a fly wheel more carefully just by hand for a few stitches either if you really have a too thick, lumpy and bumpy place to sew though just cruising along fast motor wise. Instead that is smart thing to do then, that way you don't untime your sewing machines or break the loopers on the sergers. You could use a little jean a ma jag plastic piece there or even a folded up piece of cardboard or fabric as a jig too, just maybe better to turn by hand then, unless you got good control as you don't want to by accident, try to sew though one of those either.

Sunshine12242
Sunshine12242
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Date: 10/6/13 4:13 PM

Thank you everyone for your hints. I will definitely try them all.

CSM--Carla
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CSM--Carla  Friend of PR
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In reply to Sunshine12242 <<


Date: 10/6/13 9:12 PM

Here's another idea.

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