directions tell me i need to cut 4 1/4” squares with an x to get my shape. i don’t save 4 1/4” squares – i don’t have those on hand all the time and i need a lot of variety. this would be a pain!
but i know by looking at that 4 1/4” measurement that the unit is going to finish at 3”. the formula for quarter-square triangles is to take the finished size of the unit and add 1 1/4” and then cut that with an x, so i just worked backwards. take the cut size, remove the 1 1/4” and i am left with the finished size of 