Half square triangle are all cockeyed
I am making Jenny Doan's Big Star quilt and doing her way of making half square triangles. I already sewed the 10" blocks 1/4" around the edges of enough blocks to make a king size quilt. That is all done.
I cut apart enough of them to make one star and starched each half square block, put it on The Steady Betty and ironed the sewed edge while it was closed and then opened it and pressed it open. Every single one was so cockeyed all around the edges and down the sewed middle line.
Should I have waited for the starch to dry first before i ironed it? What am I doing wrong? Isn't the bias at the edges and not the center? The center was so crooked. I need help. I just ruined one star block and will not press another one until someone helps me. Please help me. Thanks.