Needle thread breaks while quilting on machine frame
My Juki TL-98Q has been working just fine, except on my latest machine quilting project. I have the 98Q paired with a SuperQuilter frame and am using the Quilters Cruise Control. I have followed Juki instructions for quilting; i.e., drop feed dogs, set stitch length to "0", green pressure bar set at top. Am using Coats and Clark Star machine quilting thread in the needle and RSC rayon embroidery thread in the bobbin. The stitches are even but after several inches of stitching, the thread breaks. I have changed to needle, which is a Schmetz 130/705 H-Q No. 90 Can't think of anything else to try. Bobbin thread moves easily from bobbin, as does the needle thread. Any suggestions would be very much appreciated. Ann Lillich, Cimarron CO
Re: needle thread breaks while quilting on machine frame
I posted question about top thread breaking when quilting (using walking foot). Finally solved my problem, my solution may help others. Decrease the presser foot tension to nearly 0. Had tried different threads, tension settings, needles. Nothing worked until I adjusted the presser foot tension. Quilting went like a dream, even through seams ect, also worked for attaching binding.
Re: needle thread breaks while quilting on machine frame
My friend and I both have the Juki 98Q but on different frames - we were both having problems (needles breaking, thread getting tangled) we removed the thin metal thing inside the bobbin case and have had no problems since (over a year now!).
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Has a piece of broken needle or chunk of thread jammed into the blades and are not letting them move? If there was a big time thread jam it can actually break one of your blades and you will have to go to a repair man and have the blade replaced.
from what you said about the bobbin thread continues to break check for burrs in the following area--even the smallest burr can cause problems bobbin bobbin case needle plate needle could be damaged or bad thread
Check the height of the quilt under the machine-adjust the bars until the quilt is just barely over the bed of the machine, and level front to back and side to side. Also, level up the frame, using a long carpenter's level. You'd be surprised how much this can help with all sorts of thread problems.
Firsrt, try going slower, especially on curves. The Juki is so danged fast, it's easy to run faster than the thread can handle. As far as tension, the best approach is to experiment with a scrap quilt "sandwich" until you find the best tension settings. Also, could your problem be with the thread you're using? Different threads call for tension adjustments. Try using a bigger needle-smaller needles can "cut" the thread, as can defective needles, especialy on curves with free motion. Tension issues are, without a doubt, the biggest problem I've had, but patience and experimentation will usually solve whatever is going on.
Make sure the feed dogs are dropped (or feed dog cover is on - I can't remember which way this machine works). The stitch length on the machine has no function so ignore it. (I set it to zero so the machine doesn't have to work as hard). Hopefully this is all that's wrong. If not, use a shorter setting for the stitch length on the regulator, oil the hook and move slowly and smoothly. Good luck!
Your problem is the top thread. Make sure you lift the presser lever BEFORE you thread the machine. After threading the machine, just before you thread the needle, lower the presser foot, and test the top tension by pulling down on the thead. If there is little or no tension, adjust the top tension to a higher number, say from 3 to 5, or from 5 to 7, and test the tension again. If you fail to increase the tension by above procedure, look for cotton that might be stuck in the tension blades and remove it. Hope this will help you
Several things to try, I have this set up and after six months I'm still trying to get some issues resolved. First make sure the machine is treaded correctly, the Juki doesn't thread like most machines, make sure you have the bobbin going the correct way. After the machine then it has to be in the frame which means that the fabric is most likely to tight, this is a common problem, if you are bending the bars then it is too tight. Also, look at how the quilt is in relationship to the frame, is it level? As you quilt and roll, you will need to adjust the frame up, the quilted part should not drag on the machine and the to be quilted part should not be below the machine. It is a critical that the frame and the machine be even with each other, if not the machine will try to pull and won't sew correctly. Also, another tip, after each quilt change your needle, the reason is that free motion is technically bending the needle. Hope all this helps.