How much fabric do I need.
09-10-2011, 10:12 AM
#2
Power Poster
Join Date: Mar 2009
Location: Lake Elsinore, CA
Posts: 15,144
Do you mean d9p? I'm not familiar with d9d, but maybe there is such a thing. We could still use more information since there is no standard measurement for a king size quilt.
When you make a d9p from a 9-patch, you lose 1/2" in block size. So if you start with a 10.5" finished 9-patch block you would get a 10" finished size d9p block. This would mean each patch in the 9-patch would be 3 1/2" finished. It would be cut at 4". If you count on 40" usable fabric in each WOF strip, you can get 10 patches in a WOF strip. You need 9 patches for each 10" block. But do you want the same fabric always in the corners and center, or do you want half the blocks with one fabric in the corners and center and the other half reversed? Usually a different color is put in the center? Or another arrangement? I'll assume your fabrics are evenly split, but that's not necessarily the case.
Let's assume you want the quilt to be 110" square. You need 11x11=121 blocks (assuming no borders on the quilt). 121 blocks *9 patches/block = 1089 patches. You can get 10 in a strip so 1089 patches / 10 = 109 strips total. You want half to be of one fabric and half of another (assumption!), so that means 55 strips of each fabric (half of 109, rounding up).
55 strips * 4"/strip = 220 inches of each fabric. 220" is just over 6 yards. I would buy 6.25 - 6.5 yards each.
That sounds like a lot! But keep in mind 110" square is about 8.5 yards of fabric if you just took 40" fabric and sewed it together without making blocks. So needing 12-13 yards is not unreasonable with all those seams.
I might have made an error in the above calculations, and I certainly made assumptions about how you wanted to make the quilt.
When you make a d9p from a 9-patch, you lose 1/2" in block size. So if you start with a 10.5" finished 9-patch block you would get a 10" finished size d9p block. This would mean each patch in the 9-patch would be 3 1/2" finished. It would be cut at 4". If you count on 40" usable fabric in each WOF strip, you can get 10 patches in a WOF strip. You need 9 patches for each 10" block. But do you want the same fabric always in the corners and center, or do you want half the blocks with one fabric in the corners and center and the other half reversed? Usually a different color is put in the center? Or another arrangement? I'll assume your fabrics are evenly split, but that's not necessarily the case.
Let's assume you want the quilt to be 110" square. You need 11x11=121 blocks (assuming no borders on the quilt). 121 blocks *9 patches/block = 1089 patches. You can get 10 in a strip so 1089 patches / 10 = 109 strips total. You want half to be of one fabric and half of another (assumption!), so that means 55 strips of each fabric (half of 109, rounding up).
55 strips * 4"/strip = 220 inches of each fabric. 220" is just over 6 yards. I would buy 6.25 - 6.5 yards each.
That sounds like a lot! But keep in mind 110" square is about 8.5 yards of fabric if you just took 40" fabric and sewed it together without making blocks. So needing 12-13 yards is not unreasonable with all those seams.
I might have made an error in the above calculations, and I certainly made assumptions about how you wanted to make the quilt.
09-11-2011, 04:20 AM
#3
Senior Member
Join Date: Jul 2009
Posts: 935
Originally Posted by blueangel
I want to make a d9d king size quilt using 10 inch blocks. Just 2 colors. Could anyone tell me how to find out how much fabric I will need.
http://www.quiltingboard.com/t-150081-1.htm
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