Aloha, Ladies:
I was checking out this youtube video about making a quilt top out of one jelly roll by attaching all the strips end to end into one long piece (1,600inches).

I am part of a group of volunteers who teach sewing to anyone 9 years old to adult; and thought this would be a great quilt for our participants to make. This is a free class and the participants (girls, boys, men & women) would make there own strips from the fabric donated to this program. Since the seams are mitered as for making bias binding, I would think you would have to add some length for the two seams. Would that be 2" (1" for each seam)?

/////////////////
posted as Main/Cristmas Projects? on second page by lynngreen
First, here is a you tube link to see them being made:
http://www.youtube.com/watch?v=EomX7t7to_o

Using one jelly roll you randomly sew all the strips together. They are attached end to end with a diagonal seam. This results in a strip about 1600 inches (!) long. You cut off 18 inches from one end. Take the two ends, rights sides together, and make one seam down one side of what now is 800 inches, cutting the bottom. Then you brings ends together again, right sides together and sew one side, cutting the bottom. You do this until you go from a 1600 inch strip to a 48X64 top. The pattern is really neat, and the you tube link shows several completed tops. It is taking me about an hour to sew the initial strips end to end then about another hour to sew all the seams.
///////////


Your help is greatly appreciated.

Jelly roll strips are 2 1/2" X WOF (width of fabric) so, generally, 40 - 42 " in length

Thank you, auntpiggylpn, for your quick response.

The 1600 referred to is the starting total length of the the forty 40" strips. Out of the package. But the 40" is length isn't fixed as the WOF does vary among fabrics (and jelly rolls).

You don't need to make any adjustments or add any more length for the quilt to work and finish as seen in the video (and everywhere else).

So if the kids/you are cutting from stash, then all you need to start is the forty WOF (width of fabric) strips.

You can also do this without doing a miter. Here is a beautiful variation. http://www.quiltingboard.com/t-150940-1.htmed seam.

If this link doesn/t work. look under Search at the top of the page and search under 1600 plus square.

http://www.quiltingboard.com/t-147713-1.htm

and

http://www.quiltingboard.com/t-150940-1.htm

nice quilt and idea!

I have also seen this done with a 2.5 inch square of fabric attached to the end of each strip. Don't forget to cut off half of the first strip That makes it so that all of the seams are staggered.

Due to the age of the children, they do not have to miter the strips- it would be easier for them. I did not miter the strips and my quilt top came out looking great. For me mitering is tedious and I think for children it might be easier not to.

My beelet made these quilts as one of our projects. You do not as any length to compensate for the diagonal seam. You just sew the 40 strips (which are width of fabric) to each other. BUT REMEMBER TO CUT 18 INCHES OFF THE FIRST STRIP YOU SEW WITH. iF don't all the seams will line up with each other. By cutting the first one off it varies the placement of the seams. We also went on to make Quilts of Valor using this method for the wounded souldiers.