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Thread Shredding and Breaking
frozedog
frozedog
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Date: 5/20/14 9:01 PM

Just bought this Old Rex 11-155R Walking Foot machine. I have worked on several regular sewing machines but this is my First walking foot. Have done a thorough cleaning and tune up. Set the hook timing and have ensured it’s correct Based on the factory manual. Problem: Using a #22 needle and #92 thread and the machine set on 6 mm stitch ( or any stitch length for that matter) and then playing with the upper tension (high or low) doesn’t seem to matter, the Needle thread is being shredded after about 5 or six stitches. I’ve checked the hook to ensure there are no “Spurs” on the point and that it’s nice and sharp. First “Walking Foot” I’ve ever dealt with so, I’m at my Wits End and what else to look for. It seems to be hooking the thread correctly but the upper tension does seem to be off a bit and does not seem to be tight enough no matter how much it tighten it I can seem to get it to pull the bobbin thread up . Still have “Loops” on the bottom but it feels tight in the tensioning discs. The thread appears to be shredding at the needle eye. I have checked everything in the Thread path and there are NO burrs or anything that I can see or feel that would be causing an abrasion to the thread. But the Stitch is definitely not correct. It appears like there is NO top tension no matter how tight I tighten the top tension discs. I've double checked to ensure the machine is threaded 100% correctly. I can and will provide pictures and or videos if needed. Brand new needle and Thread sewing in Standard upholstery vinyl. I’m trying to learn about these walking foot machines so if any of you experts can lend me your knowledge I’d appreciate it. Not sure if it matters but...I'm a Old Guy That just started doing this about 3 years ago cuz I was too cheap to pay someone to upholster my boat, so I taught myself how to do upholstery. Started out on an old 50's model Kenmore.
-- Edited on 5/20/14 9:05 PM --

PattiAnnJ
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Date: 5/20/14 9:33 PM

Somewhere between the thread spool and bobbin something is chewing the top thread. Did you check the eye of the up-take lever and the opening in the needle plate?

Best wishes for a successful out come.

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

beauturbo
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Date: 5/21/14 1:43 AM

I think your size 22 needle is too big for your 92 thread, (and maybe maybe even just too close to your hook) try a size 18 or 20 needle instead. If same thread is suddenly not breaking or shredding anymore then that way, then that may be it.

The top foot does not even touch the thread, so that has nothing to do with any thread problem.

If you really had no top thread tension, you would know it, as when pressure foot down, you could still pull thread freely down through the needle eye. And it would be all thread loopies on the back. You got no numbers on your tensioner, so you just turn it anyplace you want. Maybe set your bobbin case screw for your thread first, when threaded up with bobbin in it, and you holding loose end of thread, and case just dangling in air, it should just hang there, but if you jiggle the thread a bit, then the case should slowly slip and slide down the thread a bit, like an inch maybe or less, for each jiggle, but not suddenly falling to the floor.

ASiverson
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Date: 5/21/14 9:38 AM

Good luck, FrozeDog! Let us know how you make out if you can!

------
Annette

sewdoggie22
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Date: 5/21/14 9:45 AM

Did you try a different spool of thread and a different bobbin?

Pamela R
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Date: 5/21/14 11:07 AM

I had to replace the feed dog cover plate 3 times on one of my machines, and was just about to throw it out when a new machine mechanic found that my shaft that the needle goes in was slightly twisted so that the needle hole was not facing exactly forward(for my machine) once it was straightened out I have not had a single problem with the thread (or machine).

Catina
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Date: 5/21/14 12:26 PM

This is a long shot, but is there another bobbin case you could try for giggles?

------
Your "Pattern Hack Fairy",
Catina Ferraine

www.PatternHackFairy.com


Soolip
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Date: 5/21/14 12:27 PM

You have a burr somewhere along the upper thread path. When you find it, it can be easily polished out with some fine emery cloth.

Al Johnson
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Date: 5/21/14 1:39 PM

You may find that once your tension problems are straightened out, the shredding problem may go away also. Try the suggestions that beauturbo made first.
As Pamela R suggests, your needle has to be aligned with the machine properly. Industrials usually have no flat on the needle to help with this, so you have to judge it by eyeball.

Good luck, and let us know what works!

------
A sewing machine is just a welder for textiles.

PattiAnnJ
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Date: 5/21/14 4:52 PM

Proper needle installation would be with the side of the needle with the long groove facing the location of the bobbin. This groove helps guide the thread as it grabs the bobbin thread and forms the stitch.

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

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