When I wanted to do my MSQC table runner last year I couldn't get the half hex ruler also. I did however had my 60* triangle ruler. I was able to use painter's tape to mark where I wanted to cut the shape from a strip of fabric. I will post a picture of my marked ruler beside the shape I cut. I would have placed it over the shape but then you can't see the ruler. Let's see if this picture will load and maybe it will help you.