My thread broke, and a letter was skipped in the middle of a monogramming project. How do I go back and sew the missed letter?

Install a brand new needle and confirm it is inserted with the flat side facing the proper direction.. A bent, damaged needle will sometimes cause skipped stitches or even needle strikes inside the machine. A new needle is the least expensive cure for a lot of sewing machine problems. The needle should be changed about every 8 hours of sewing or at least when starting a new project.

Remove the top thread. ALWAYS RAISE the presser foot and rethread from the beginning. Verify the thread path is correct.

Sometimes, skipped stitches will occur if the needle, thread, and fabric are incompatible. Be sure to use the correct needle for your project. Use a good quality thread--AVOID old or bargain bin thread!

If the machine continues to skip stitches, then it may be out of time. Search for sewing machine timing or take it for service.

Basic Maintenance Tension Skipped Stitches

What to Do If Your Sewing Machine Is Skipping Stitches

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Every machine is different, so a "right" tension will vary. The factory standard tension setting is the midway point between high & low number...BUT that needs to be tweaked per your machine.

Skipped stitches? Be sure to use a brand new needle and a needle that is compatible with the thread and fabric you are sewing. (Replacing an old needle is the most common and least expensive fix for a lot of machine problems.)

Optimal tension is when the upper and bobbin threads meet in the middle of the fabric.

Basic Maintenance Tension Skipped Stitches

What to Do If Your Sewing Machine Is Skipping Stitches

was the presser foot lowered? check if the loop-taker is properly installed or seated.

you may have the fabric not tight enough in the hoop or try using the same colour thread in the bobbin

Perhaps you should run your bobbin thread through the small hole on the lever that moves in and out. That is what you do when you sew a buttonhole, which is the kind of stitch a monogram makes. I haven't tried it because I don't do monograms, but it makes sense. Also experiement with the tension settings.

Well, before I did all that (which may be necessary), I would take a piece of UNWAXED dental floss or hand embroidery floss and floss between the tension disks. You mentioned that you were suddenly breaking threads; there may be lint or loose threads or both seated between the disks, preventing the thread from seating properly. Then,
I would take the embroidery unit off and try to do some sewing with it, to see what results I got. If you can catch and bring the bobbin thread to the top with the top thread, I am doubtful that your timing is off. Sew a line of both straight stitch and zigzag stitches, and see if the stitches are balanced. If not, you may have a bobbin tension issue, and if so, most bobbin cases can be adjusted.

I think you'll find, though, that things will improve considerably when you have cleaned out the upper thread path and tension disks. Make sure when you do that, that your foot is raised, so that the disks are spread. Oh, a drop of sewing machine oil wouldn't hurt either--generally you should put a drop of oil for every 5 hours of embroidery.

Please get back to us to let us know!

Don't ship it back and the problem is not the tension settings. Even on the tightest setting the thread should not break. Most likely the machine is not threaded correctly. Possibly, you are using too thick a thread or a needle that is too small.

Solution back to basics:
1. verify that you are not using upholstery thread. Use a standard cotton poly mix.
2. the bobbin thread should be the same as the top thread.
3. consider watching a video showing the machine being threaded and make sure the needle is in the top position.
4. sew a test pattern on a normal weight fabric like an undershirt - avoid very thick material.

If this solves your problem then change one item at a time. Use a heaver thread if that is what you want. If it works ok then go to a thicker material, etc. Do not change two or more things at a time..If you have a problem it makes it hard to identify the source.

Be sure to install a brand new sharp needle before sewing. Check that the needle, thread, and fabric are compatible. An embroidery needle or top stitch needle may help.

When threading the top thread, ALWAYS RAISE the presser foot before threading to insure the thread seats in the tension disk.

It is very possible that the timing is off, which often occurs with broken needles. A common symptom is that the needle will not pick up the bobbin thread. Missed stitches aren't necessarily timing related--be sure to install brand needles often and use the correct needle for the fabric & thread you are using. Using the wrong needle will often cause skipped stitches.

What to Do If Your Sewing Machine Is Skipping Stitches

10 reasons for skipped stitches

Here What to Do if Your Sewing Machine is Skipping Stitches

Basic Maintenance Tension Skipped Stitches

You can search for sewing machine timing or take it for service.

make sure your bobbin thread is in tension spring on bobbin case, if it is tighten your bottom tension.