Question about Singer Quantum 9940 Computerized Sewing Machine

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Stopping at midstitch while free motion quilting.

I was free motion quilting and was doing fine. All of a sudden, it kept stopping at mid-stitch and I would get the display of thread not flowing/threaded correctly. i have shut down the machine, re-threaded and cleaned out bobbin area. when i pull on thread from needle and bobbin, tensions seem okay and there is no snag. why does it keep stopping and not wanting to go on? the first 5-6 stitches before it stops completely have good top and bobbin stitch. Please help!

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Did you try cleaning the drive area of the machine? you may have a lot of buildup of dust,thread,fabric, etc. that nay be interferring with the mechanical drive. You might have to remove the cover to get to the inside to clean. Use a small computer vac to clean up and a small dry paint brush to clean parts. Or get a professional cleaning.

Posted on May 08, 2009

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Posted on Jan 02, 2017

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Install a brand new sharp needle (embroidery, top stitch, microtex, or universal) of the size that is compatible with the thread weight and fabric.

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Bobbin thread will not catch unless the foot is down?


Ashleigh--Your machine will work satisfactorily ONLY if the presser foot is down. When the presser foot is up, the tension disk is released, therefore, no tension = a big knot of thread.

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Some sewists will free motion quilt without a presser foot (if they don't have a darning foot), but that is very dangerous as one can easily sew through a finger. However, even when sewing without a presser foot, the presser foot mechanism needs to be lowered in order to properly form stitches.

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Hi, Free motion quilting is done with your programmed quilting stitches, Lower the feed dogs using the small white dial on the front of the machine behind the accessory tray, pick from one of the quilting stitches. they do make a free motion quilting tool ( I think they call it a hoop), but it just sets on top the material and helps you guide your material thru the machine. Hope this helps

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https://www.superiorthreads.com/education/what-causes-skipped-stitches

https://moonlightingquilts.wordpress.com/2012/04/19/skipping-the-skipped-stitches-in-your-free-motion-quilting/

https://www.generations-quilt-patterns.com/skipped-stitches-driving-you-nuts1.html

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