Originally Posted by
Tartan
I use the rectangle with 2 squares placed on each corner, sew the diagonal seams and trim off the corners. You can use 2 squares the same colour or 2 different colours.
That's what I do. I call it the "old fashioned way." For the diagonal seam I draw the line and sew on it. If the squares are small enough, I use the line marked on the bed of my machine just in front of the presser foot to guide the point of the block.