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Topic: Serger threads snapping -- White 534  (Read 850 times)
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« on: June 23, 2008 11:53:26 AM »

OK, I have a used White 534 and am having trouble with the threads snapping. This is my first serger, so I don't have any experience to go on, but ...

I have checked to make sure I have threaded it in the proper order with all tensions set at 0, I've changed the needles (type suggested in manual for fabric I'm using) , it's new thread, the thread guide pole is fully extended ... it happens when the tensions are set at anything other than 0, so I don't think I've got the tension set to high.

It wasn't happening the other night. Only now, the second time I've used it. I spent 2 frustrating hours trying to get it to work this morning. grrrr.

It's the right needle thread and the upper looper thread that I seem to be having trouble with. The right needle thread seems to pop a few stitches in. And when I am successful getting that to work, the upper looper thread snaps, a few stitches in and sometimes right after I finished sewing a seam successfully and am trying to leave a three-inch chain as suggested in the manual.

Any thoughts/suggestions.

I bought it on eBay, so I don't have a shop I can turn to for help, though I am planning to take a serger class from one of the local shops as soon as it gets on their calendar again. Any thoughts/suggestions in the meantime?

Thanks in advance,

« Reply #1 on: June 24, 2008 06:45:57 AM »

It is critical to sergers to thread them in the right order. If thread #3 breaks, it's not so bad as you only have to re-do 3 & 4, but if #1 or 2 breaks, bleah. If you are threading just the broken one & it isn't #4, this is the problem. I learned this the hard way.
« Reply #2 on: June 24, 2008 08:23:50 AM »

yeah, as completely counterintuitive as it seems, I've been completely unthreading up to broken thread and then rethreading (making sure lower threader is not looped up over the upper threader thingy as per threading diagram), and this hasn't solved the problem.

I'm going on vaca for a few days, so I've completely unthreaded it, covered it, and hope that when I return the problem will have magically resolved. hmmmm. what are the chances?  Wink

« Reply #3 on: June 24, 2008 12:50:09 PM »

I may not have bneen clear enough. If a thread breaks it and all threads that go after it must be re-threaded in order. You can't just work the broken one around the others- stupid persnickity machines just won't go for that.
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« Reply #4 on: June 24, 2008 12:57:37 PM »

Make sure the the needles are inserted properly - if they're keyed shafts this won't be a problem, but some sergers don't use keyed needles. If any of the upper needles are facing backwards, so that the groove is in the back, the thread will ALWAYS break - the groove has to be facing forward so it can guide the thread through the fabric without any extra friction. Again, this is usually only an issue with industrial machines that don't use keyed needles- but you might check just to be sure!

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