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Forum > Sergers, Coverstitch and Blindhemmers > how to use jean a ma jig ( Moderated by CarolynGM, Deepika)

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how to use jean a ma jig
smutnys  Friend of PR
Member since 2/15/06
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Date: 9/21/12 9:29 AM

I'm a little confused on how to use this to get over thick seams. I have an Evolve and it has a difficult time getting started on a shoulder seam that has bound edges at the neck end, or any other bulky seam that has to get under the foot.

The seam gets caught under the foot, right before the knife. So the fabric isn't even getting trimmed, let alone feeding to the needles. And the rest of the fabric keeps feeding on the left side of the foot until the part that was caught finally breaks free, but ends up away from the needles and the beginning of the seam remains unstitched.

I tried using the jean a ma jig that came with my husqvarna viking sewing machine, and i also tried using some folded up flannel under the back of the foot.

But the feeddogs just push it back out of the way. Can anyone explain how they get over the bulky seams with these? How far do you push the hump jumpert under the foot? Does it go all the way to right behind the needles? Is it being moved away with your feed dogs? I am also afraid I may break a needle if it slips forward

Heirloom sewing for my girls!

California USA
Member since 5/2/09
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In reply to smutnys <<
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Date: 9/21/12 12:28 PM

They actually made those things for sewing machines, not sergers.

Sergers do have have a much stronger pressure foot, a much larger pressure foot, and much longer feed dogs and split feed dogs. And they are much faster than sewing machines. And knives on the right in front of their feed dogs. So I think you are kind of on your own there if even choosing to use one with a serger. But you can sometimes, if very carefully. But if doing that, I would not even attempt to use the sergers foot pedal to power it near a big piece of plastic or even wadded up fabric or cardboard used as a "jig" in it, that way at all.

Instead you would have to be very careful and only turn the serger's fly wheel by hand in just that one spot, and of course remember that a serger's fly wheel most times turns in the opposite direction than a sewing machine.

So maybe the answer is most times, to more to change your sewing technique instead, and have less thickness and layers and grade your seams, and even iron down anything as flat as possible and pound down any thick places with a hammer or such first, and also just respect the limits of a machine, and not break anything using it in a way that might happen. A new sharp knife might help some too, if the old one was dull.

Ohio USA
Member since 12/3/06
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Date: 9/21/12 3:29 PM

Needle down into the thick fabric, raise the presser foot and slip in the jean a ma jig or hump jumper from the back.

Practice with the sewing machine. Never tried this with a serger.

"Improvise, adapt and overcome." - Clint Eastwood/Heartbreak Ridge

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