Missed stitches (help!!)

Was this sticky-backed Velcro? If so, some of the adhesive may have been deposited in the bobbin area, or in the needle plate hole, clean those out carefully.

I was going to suggest a new needle, but I see you have tried that. Make sure the needle is inserted in the proper direction, that is with the flat upper part properly oriented for your machine. On my machines that flat area is to the back.

Clean the needle thread path, making sure to clean thoroughly between the tension disks.

I would also completely re-thread the machine: needle and bobbin path, with the instruction book open to the section showing exact diagrams. It happens sometimes that the thread is not seated completely between the tension disks, and this will cause stitches not to form.

Good luck,

I second a complete rethreading. And make sure your presser foot is raised until you get to the point of threading the needle. Then you can lower it. (this makes sure the tension disks are open and the thread can pass between them.)

When you were stitching the velcro, did the fabric stop moving and kind of jam up? There may be thread or even fabric bits in the feed dogs or under the bobbin.

Take the machine as far apart as you can. Take the bobbin out, take the bobbin race apart as much as possible, remove the throat plate, etc. Clean clean clean. I use the vacuum for a big de-lint like this. It really sounds like something is stuck in there somewhere. Then put everything back together, rethread, and see what you get.

HTH Sharon

I also advise rethreading - also take the spool off the pin and put it back again as part of this. I sometimes find that the thread falls off the spool and wraps itself around the spool pin causing all sorts of unwanted effects and because the spool obscures the tangle it takes time to notice it.

Hope you get this issue sorted out.

Lizzy

I usually change to a size 16 needle to sew velcro. This works best for me. Barbara in FL

I'm not familiar with the 6610, but it is possible the timing got knocked out of whack by the velcro.

gwh

Take it apart as far as possible, clean (vacuum and brush only, not compressed air), oil if so directed in the manual, reassemble. Remove all thread from the machine, top and bobbin -- bobbin out, spool off the spool pin. (I just "cured" a machine that was "mistimed" by taking the spool off and removing the backlashed thread under the spool pin.)

If you tried to sew stickyback velcro, use a piece of well-washed cotton muslin over a cuticle stick or q-tip; dip the cotton in rubbing alcohol or unflavored vodka and clean and dry the local thread path... there may be residue carried down by the needle.

Make sure the needle is in right way around -- generally flat of the needle to the back. Backwards needles don't pick up thread well and skip stitches. (I'd suggest a size 80/12 sharp needle for testing purposes -- that's what they're usually timed with, ime.)

Rethread from scratch, manual in hand, making sure the presser foot is up so the thread can enter the upper tension.

Try again, making sure you hold the ends of the thread when starting the seam.

If no joy, go to:

(that URL is likely to break... make sure you get all of it) and compare the timing there to your machine.