I used green Sewline on a quilt I just finished hand quilting,
washed it and the green Sewline did not come out. It is under the stitching. Any suggestions would be greatly
appreciated. A friend of mine had the same thing happen.

I had a marking pen not come out once, and someone here suggested a piece of material, soap ( i used dawn dish soap) and water and dab, it worked, I hoped this helps...

I haven 't ever used the green colour, but I've had success with the grey and white, using Sewline's eraser, made for the job.

Hope you get it out!

I don't think Sewline pencils are supposed to wash out. I think you're supposed to erase the lines off before washing. They have a website, maybe they can give you more information there.

here's a link to the sewline site that explains how to remove the lines http://www.sewline-product.com/qa

This is what you can use to get the stubborn blue pen out so see if it helps.

If your blue soluble marker does not wash out, try the following:
¼teaspoonbakingsoda
¼cuphotwater
Pour over marked area and the blue disappears forever.

Use Shout Out or Spray & Wash and take your
thumbnail and rub it in on the line and then
re-wash. Next time before you throw it into the
washer use the Spray & Wash on it first.

I had a sewline. I didn't care for it very well. I thought it didn't mark well--the lead would break and so on.

I love Sewline pencils. I use plain water and a soft child's toothbrush to gently brush the lines away (going with the grain), but I've only used the white and the gray. Using an eraser stretches the fabric too much, imho.

ETA: If you've dried your quilt in a dryer, the marks may now be heat set.