Hi everyone, has anyone wondered about or more importantly, figured out how to create a specific sized (say queen) quilt using the race method? I mean other chan more racing and cutting adding to sides, using borders, sashings, what have you? It is driving me and my sister crazy (doesn't take much). Regardless, thx a bunch.

I have done other sizes and have come up with very odd shaped quilts. I haven't sat down to figure the math of it all. I have added borders to them to make them bigger.

OK...had to stop and do some calculating. If you know what size you want, you can back into how long of a 2 1/2" strip you need to start with.

<width> * <length divided by 2 because the rows are 2" finished> = amount needed

Example: 90 x 90 square

90 * (90 / 2) = 4050"

If you know how much you have, you can figure out the finished size by taking the full length and dividing by two and doubling the rows as you go. (I know, that was confusing.)

So, for two jelly rolls, it would be 3200 inches:

3200 - 1 row

1600 - 2 rows

800 - 4 rows

400 - 8 rows

200 - 16 rows

100 - 32 rows

Finished size is 100 x (32 * 2) = 100 x 64. In this example, the rows would be going vertically instead of horizontally.

Math off a little here. I believe the correct answer should have been 4500. Other than that you gave a great explanation of the Jelly Roll race Quilt. Cudos for the work you did on it.

I was interested in this thread as I have been gathering batik jelly rolls for a king duvet for my son. Thanks Fayelmo & Jeanine for getting my head running along these lines for how I might do this. Now, check my math - using 100 Jelly Roll strips:

Cut these 16 rows into 3 equal lengths – approximately 91 + inches

Sew all 3 sections together on the long sides – you now have a rectangle 91” X 96”. I think this would be pretty close for the center of a king size quilt or duvet.

I was interested in this thread as I have been gathering batik jelly rolls for a king duvet for my son. Thanks Fayelmo & Jeanine for getting my head running along these lines for how I might do this. Now, check my math - using 100 Jelly Roll strips:

Cut these 16 rows into 3 equal lengths – approximately 91 + inches

Sew all 3 sections together on the long sides – you now have a rectangle 91” X 96”. I think this would be pretty close for the center of a king size quilt or duvet.

Man, Donna, I want to see the pile of fabrics when you finish the 4400" - I just laugh when I see the 1600" piled up so yours is gonna be really neat to see. Don't forget to cut off the first 18" of the first strip so they will end up staggered. I made one for SIS for her 80th and need to get it up to her. I was late with it! Imagine that! Also need to take a picture of it.

Have fun, this sounds like it will be awedsome. Hope you are doing well.