Kit came from Farmhouse Threads, Sewing Room Sampler. Their instructions were for only one method which was to cut squares, then cut diagonally twice and then sew units together forming the HST. There would be tiny triangles to sew together AGH! So I was looking for a better method and how to calculate the measurement to be successful. I did use Bree123 calculations and scrap fabric to make a prototype. Worked fine but I did have to trim a smidgen so I will give her EDITED dimensions a try later today. Thanks so much everyone!!!