Originally Posted by Sadiemae
I am not sure why it would fall short. The measurements are correct. Maybe with the pressing, you need a scant quarter inch seam. Sometime I will use 4" squares for the hst and square them to 3 1/2".
This is my suggestion as well. If you work from 4" squares you probably will have to square and resize your HST blocks but you should have them working out better.