We're moving along! This week: another strip for the block.
5.1 Using a sharp pencil or an erasable marker, draw a diagonal line from corner to corner on the wrong side of 48 of the White 3-1/2” squares. (Unless, of course, you marked all of them at the beginning.) As usual, don’t be slap-dash about the line; accuracy will make the next step turn out better.
5.2 With RST, place a White 3-1/2” square from the previous step on one end of a Red 3-1/2” x 12-1/2” strip, making sure the drawn line is oriented as shown. Sew on the drawn line. (I usually sew just a thread or two toward the outside corner of the square, to allow for the thickness of the thread and the fold-back that you’re going to do. This is the equivalent of a scant 1/4”.)
5.3 Fold back the white triangle and press, using the base of the Red strip to match the edges exactly, and to maintain the 3-1/2” x 12-1/2” measurement.
5.4 Fold back the White triangle so you can trim the two excess layers to about 1/4".
After trimming, fold the white triangle back to position to complete this end of the strip.
5.4 Repeat with the remaining 23 Red strips and 23 more marked White squares.
5.5 Now place a marked White square on the opposite end of the Red strip, making sure the drawn diagonal line is oriented as shown.
Sew on the line, fold back the triangle and press as you did with the triangle on the other side of the strip.
5.6 Repeat with the other 23 units from Step 5.3 and the remaining marked White squares.