3-7/8" square block
#3
It's because you're going to end up making half square triangles that will end up being 3 1/2". Since you always have to trim them up anyway, it's much easier just to cut 4" squares, mark a diagonal line on the back, put the two you need faces together and sew 1/4" on both sides of your line. Then just cut on your line, press them open and trim to 3 1/2" square.
#5
Senior Member
Join Date: Feb 2007
Location: VA
Posts: 311
Originally Posted by raptureready
It's because you're going to end up making half square triangles that will end up being 3 1/2". Since you always have to trim them up anyway, it's much easier just to cut 4" squares, mark a diagonal line on the back, put the two you need faces together and sew 1/4" on both sides of your line. Then just cut on your line, press them open and trim to 3 1/2" square.
#6
Originally Posted by ritamaew
Originally Posted by raptureready
It's because you're going to end up making half square triangles that will end up being 3 1/2". Since you always have to trim them up anyway, it's much easier just to cut 4" squares, mark a diagonal line on the back, put the two you need faces together and sew 1/4" on both sides of your line. Then just cut on your line, press them open and trim to 3 1/2" square.
#7
I was told by my quilter, who has been published 4-5 times in the last two years, to just cut it 4" then cut the diagonal. She said lots of well known quilters do it this way. She has quilted (longarmed) for many well known quilters. Hope this doesn't cause too much controversy.
#9
Super Member
Join Date: Apr 2007
Location: Central Ohio
Posts: 1,079
Well, I just feel like an absolute fool!!! Here I've been carefully finding the 7/8" line and cutting those squares, and let me tell you my eyes aren't getting any younger. I never gave it a thought to just cut 4" and cut it down. LOL Guess I was thinking why do it the easy way when you can do it the hard way...
#10
Power Poster
Join Date: Feb 2009
Location: Northern Michigan
Posts: 12,861
you can cut your squares 4" then after making your 1/2 square triangle square it up to measure 3 1/2" that would be the size of the 1/2 square triangle using a 3 7/8" square.
anytime you want to make a 1/2 square triangle you take the size of the finished block, add 3/8" then add the 1/2" Seam allowance. in otherwords, if you want a (finished size) 1/2 square triangle block to measure 3" you start by adding 3/8" then add 1/2" seam allowance (which is 1/4" on each side=1/2")...so you start with (2) 3 7/8" squares (or round up to 4") draw a diagonal line across one of the squares, stitch 1/4" on each side of the lines, cut on the line, flip open and press...2 - 3 1/2" 1/2 square triangles completed.
anytime you want to make a 1/2 square triangle you take the size of the finished block, add 3/8" then add the 1/2" Seam allowance. in otherwords, if you want a (finished size) 1/2 square triangle block to measure 3" you start by adding 3/8" then add 1/2" seam allowance (which is 1/4" on each side=1/2")...so you start with (2) 3 7/8" squares (or round up to 4") draw a diagonal line across one of the squares, stitch 1/4" on each side of the lines, cut on the line, flip open and press...2 - 3 1/2" 1/2 square triangles completed.
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