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top and bottom fabric feed unevenly (Moderated by Sharon1952, EleanorSews)
Posted on: 7/15/07 10:28 AM ET
I have an old sewing machine. It is fast and strong, but the feed dogs pull the bottom fabric through much faster then the top, and I get puckers. I've got a sandwich of muslin/deluxe wt. needled cotten batting/muslin.
I have tried adjusting the presser foot, harder, lighter, with little or no change.
In the next piece I have to do, I have sprayed the top with a light coat of silicon spray
If that doesn't work, I don't know what to do next.
The machine is a Juki LZ industrial from about 1960-65.
Anybody got any ideas?
I have tried adjusting the presser foot, harder, lighter, with little or no change.
In the next piece I have to do, I have sprayed the top with a light coat of silicon spray
If that doesn't work, I don't know what to do next.
The machine is a Juki LZ industrial from about 1960-65.
Anybody got any ideas?
Posted on: 7/15/07 5:29 PM ET
In reply to caraD
Actually this is a common issues with many sewing machines. The problem is that there is resistance from the bottom of the presser foot that is retarding the passing of the upper fabric.
First, I am going to assume that the feed dog height is adjusted properly on your machine.
Then I am going to suggest that you take a look at the bottom of your presser foot. Is it nice and smooth or worn?
A roller foot or Teflon foot or a good polishing on the bottom of your current presser foot might help reduce the resistance of the top layer of fabric against the bottom of the foot.
On old machines, I like to inspect the bottom of the presser foot and replace or polish as needed. . When I store machines, I slip a scrap of fabric or paper between the foot and the feed dogs.
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First, I am going to assume that the feed dog height is adjusted properly on your machine.
Then I am going to suggest that you take a look at the bottom of your presser foot. Is it nice and smooth or worn?
A roller foot or Teflon foot or a good polishing on the bottom of your current presser foot might help reduce the resistance of the top layer of fabric against the bottom of the foot.
On old machines, I like to inspect the bottom of the presser foot and replace or polish as needed. . When I store machines, I slip a scrap of fabric or paper between the foot and the feed dogs.
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Posted on: 7/16/07 7:16 PM ET
In reply to SewClassic
I took the foot off and looked at it. It is worn, but vey smooth.
I don't think I can get another foot for this machine. The industrial machine guy in San Jose said I could not, but he wanted to sell me a new machine.......
The needle plate has some marks in it where someone has bent the needle and hit the plate, but the bottom fabric goes FASTER than the top.
Engineer hub looked at it, he loves machines! The feed dogs continue to pull the fabric after the needle is down. Is this a matter of the HEIGHT of the feed dogs? If so, it sounds simpler than trying to change the synchronization of the feed dogs and the needle.
I don't think I can get another foot for this machine. The industrial machine guy in San Jose said I could not, but he wanted to sell me a new machine.......
The needle plate has some marks in it where someone has bent the needle and hit the plate, but the bottom fabric goes FASTER than the top.
Engineer hub looked at it, he loves machines! The feed dogs continue to pull the fabric after the needle is down. Is this a matter of the HEIGHT of the feed dogs? If so, it sounds simpler than trying to change the synchronization of the feed dogs and the needle.
Posted on: 7/16/07 7:55 PM ET
In reply to caraD
I don't tinker with industrial machines, but most of them use standard high shank feet. What type of feetdoes yours take?
You could even try a piece of teflon tape on the bottom.
As far as the timing of the feed dogs, I can tell you that on most domestic machines, the teeth on the feed dogs are level with the needle plate at the same time that the needle would be just entering the fabric. Once the neelde is in the fabric, the dogs do continue to move, but they are below the plate until the needle comes up to the top again.
It sounds to me like your machine may be in need of some servicing/adjusting. If you want to do it yourself, see if you can get a service manual for the machine. Really, the industrial machines are out of my area of interest, and I will not be of much help at this point.
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You could even try a piece of teflon tape on the bottom.
As far as the timing of the feed dogs, I can tell you that on most domestic machines, the teeth on the feed dogs are level with the needle plate at the same time that the needle would be just entering the fabric. Once the neelde is in the fabric, the dogs do continue to move, but they are below the plate until the needle comes up to the top again.
It sounds to me like your machine may be in need of some servicing/adjusting. If you want to do it yourself, see if you can get a service manual for the machine. Really, the industrial machines are out of my area of interest, and I will not be of much help at this point.
------
http://blog.sew-classic.com/
www.Sew-Classic.com
www.Sew-Classic.com
Posted on: 7/17/07 5:23 PM ET
In reply to SewClassic
My machine does not use standard high shank feet. It is weird. The shank of the machine has a slot in it, and the foot has a plate that slides up into the slot. tHis plate is about 1.5 cm wide and 2 cm long, and 3mm thick. There is a screw that goes from the front, through a hole in the front part of the shank, passes through a hole in the hole in the flat part of the foot, then trough and other threaded hole in the back part of the shank.
There is a brother out there with simular feet, but Ive only seen pictures.
The feed dogs are still above the level of the foot plate when the needle goes through the hole. After the needle comes up, I'm sure the bottom layer is resilient enough to spring back a bit, but with the quilt sandwhich, the advance of the bottom when the feed dogs pull it is too much for the top that is helod by the needle while the feed dogs continue to pull.
I'll get it figured out sooner of later, and then I'll feel particularly triumphant.
There is a brother out there with simular feet, but Ive only seen pictures.
The feed dogs are still above the level of the foot plate when the needle goes through the hole. After the needle comes up, I'm sure the bottom layer is resilient enough to spring back a bit, but with the quilt sandwhich, the advance of the bottom when the feed dogs pull it is too much for the top that is helod by the needle while the feed dogs continue to pull.
I'll get it figured out sooner of later, and then I'll feel particularly triumphant.
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