you said you sewed close to your diagonal line- then cut---that is where you went wrong- you are supposed to sew 1/4" away from the diagonal line on each side of it- then cut on the line- so you have 1/4" seam allowance on each piece-
if the fabric is not too frayed you could first iron the quilt- getting everything lined up as close as possible- nice & neat-flat- then either using a zig-zag or other decorative stitch sew each one back down- making sure your stitch is wide enough to securily attach both sides... consider it a 'design element' you could use a contrasting thread- or a veregated thread and it would look as if you made it that way on purpose. l

I think I've got it fixed. I used one of my "pretty" stitches and went over every dividing line. I thought I was pretty careful with my cutting and seams, but I guess not. Thanks for your help. This quilt is going to a children's hospital. Our church makes quilts all year and then takes them to Riley once a year.

That's great that you have figured out how to salvage it! It is so neat to see these quilts being given to the charities. I work in a homeless shelter and see some really interesting quilts come through. Recently our new LQS had a charity pillowcase making day and our shelter received many of them. I didn't know, when I was working on them, that they were going to give us some. Neat surprise! Thanks to everyone out there that contributes to these comforting gifts.

You are right, it was good that the original poster was able to catch this in time. I'm glad this problem was posted, for the benefit of us all. I work with Project Linus, and we received three baby blankets that had just the same problem -- seams ripped out and no seam allowance to allow for repair. I feel so bad for the quilter who made these but have no way to let her know. They were very cute blankets but unusable. Some PL members took them and are trying to remedy them...

I'd try the wonderunder to hold it but then I'd do some more decorative stitches or zigzags to hold it.

I am so sorry this happened to your sweet quilt. Not sure what the answer is to fix it. I usually will wash my quilt top first before quilting as this has happened to me before too. Then it was easy to go back over the parts that ripped out and resew them.

This happened with me once and it was because when I cut to triangles apart there was not enough seam left.
Apparently I am not adept at doing this method. I poked the fabric down as much as I could and just whip stitched those place. It has been a year now and it is still holding. My daughter washes baby quilts a lot so it must work.

Glad you could mend your quilt. For next time, try starting with slightly larger squares and sewing a generous quarter inch from your drawn line. Then cut apart and trim the HSTs to the right size. An ounce of prevention and no blown seams.

I am glad you were able to fix it...and sounds like using decorative stitches was a perfect way to do that! Good for you and your church making the quilts to donate to the children's hospital!