I am sewing 2 layers cotton fabric and 1 layer Insul-Bright. I have the stitch length set to 3.5 for top-stitching. It keeps (about every 10-15 stitches or some times less; I get a stitch anywhere from 1/2 inch in length to 1 inch in length. What can I do to fix this problem?
SOURCE: skip stitch
The three most obvious causes (other than that of the machine possibly being slightly out of time) are:
1) Too small of a needle size - increase the size.
2) A needle that has a flaw / defect - change the needle.
3) Needle not inserted correctly, either not pushed all the way up into the needle bar, or not installed facing the correct place. On this machine, the small "scarf" in the needle (an indent just above the eye) shouldface the right side of the machine.
SOURCE: Proper Settings
A good standard tension setting is usually around 4.5.
If you find it to be looping on the bottom, raise your top tension. If it's pulling bobbing thread to the top, lower your top tension.
For straight stitch, your stitch width should be set to zero, although on some machines (and I believe your Baby Lock to be one of them,) the stitch width setting will change your needle position.
Stitch length is simply a matter of preference.
-R
SOURCE: Janome 1600P DB Stitch length
The machine is skipping stitches and is probably out of time. Change the needle, rethread the machine and try it again. If it still skips stitches, try lowering the needle by about 1/16 inch and see if it works better. If the timing is off you should take it to a technician for a complete service.
sewman7
SOURCE: 5932 knotting every other inch
Try oiling the hook if you haven't recently.
Check you needle plate and hook for damage, they may need to be buffed or sanded smooth.
Check your upper tension discs for lint and double check your upper thread path (proper threading).
There are other things like hook timing, needle clearance or broken check spring that may be wrong but you need a technician for those things.
best of luck!
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