Originally Posted by sandy12010
The pieces are 11" wide by 9"tall and my strips are 3 inches wide so now I cant figure out the darn HST for when I make them 3" like the strips and mark the line in the middle from corner to corner then stitch 1/4 inch on each side of line my HST's when sewn together come up short so do I have to make my squares for the HST 3.5 inches
as long as the pieces are straight sided, I wouldn't trim, just make your windows that size.
So your strips are three inches BEFORE you sew them in? or after you sew them in ...
The width of the strip minus half an inch will give you the finished size of your strip.
To get your HST with this technique ... add ONE inch to the finished size of your strip ... that is the size to cut your squares ... you will end up trimming some of your HST, but that one inch is necessary for that added angle.
Suppose you can't figure out the finished size of your strip ...
well, then consider the cut size of your strip and cut squares that size PLUS one inch ... then do the line and 1/4" stitching on each side of the line. <wave>