Setting blocks on point.
#1
Help!! I'm making a panel to use as a valance for my kitchen window. It will be D9Ps on point (I hope!). How do I figure for the size of the setting triangles? My block is not a usual size. The squares are cut 4" so the block is 10 1/4" square (well, give or take a few...). As Mary Ellen would say, "It's my measurement. Would cutting a 10 1/2 " square be big enough. I don't have fabric to waste, so I'm trying not to cut and experiment. Can anyone help? Thanks in advance.
#4
You will find great information on Quilters Cache
http://www.quilterscache.com/H/howto...triangles.html
http://www.quilterscache.com/H/howto...triangles.html
#5
this information comes from a book called "Complete Guide to Quilting" from Better Homes and Gardens.
to calculate the size to cut a square for SIDE triangles:
multiply the finished block size by 1.414 and add 1 1/4" seam allowance. (for example 10" block X 1.414 = 14.14 + 1.25 = 15.39 rounded up to the measurement would be 15 1/2" )
then cut the 15 1/2" square corner to corner twice to make 4 side triangles.
to calculate the size to cut a square for CORNER triangles:
divide the finished block size by 1.414 and ad .875" for seam allowance. (for example 10" block divided by 1.414 = 7.07 + .875 =7.945 rounded up the measurement would be 8" )
cut the 8" square corner to corner to make 2 corner triangles. You will need 2 squares to equal 4 corner triangles.
I hope this helps. Grab a calculator and go for it. I have cut samples of paper before cutting my fabric just to make sure.....cuz my math skills ....ummmm....suck.
to calculate the size to cut a square for SIDE triangles:
multiply the finished block size by 1.414 and add 1 1/4" seam allowance. (for example 10" block X 1.414 = 14.14 + 1.25 = 15.39 rounded up to the measurement would be 15 1/2" )
then cut the 15 1/2" square corner to corner twice to make 4 side triangles.
to calculate the size to cut a square for CORNER triangles:
divide the finished block size by 1.414 and ad .875" for seam allowance. (for example 10" block divided by 1.414 = 7.07 + .875 =7.945 rounded up the measurement would be 8" )
cut the 8" square corner to corner to make 2 corner triangles. You will need 2 squares to equal 4 corner triangles.
I hope this helps. Grab a calculator and go for it. I have cut samples of paper before cutting my fabric just to make sure.....cuz my math skills ....ummmm....suck.
#6
Super Member
Join Date: May 2010
Posts: 1,183
Originally Posted by redpurselady
You will find great information on Quilters Cache
http://www.quilterscache.com/H/howto...triangles.html
http://www.quilterscache.com/H/howto...triangles.html
#9
Originally Posted by brushandthimble
I though corner squares were only cut once? so you need to cut 2 squares?
I went back and corrected my original reply.
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