So many variables! Fabric density affects the width of the pressed seam and so does the size of the thread. You get a far different outcome when you use 40 wt. or 50 wt. than when you use 60 wt. The most important thing is the finished size of each component piece in the block. That is why using the three strip method of measurement is so important. And, of course, how we cut is important. So, again, use whatever combination of techniques and tools to help you achieve the goal of the right size patch and block combination.