I have completed this small mat by Daniela Mendola. You can find the free pattern on the blog here. There are nine rounds and I used two shuttles and climbed to each row using split rings and split chains.
I made the first repeat of the last row incorrect so I just continued with the incorrect version for the next 11 repeats. I thought with 12 points that this would fit a clock face but the clock I had in mind was too small and with my larger clock is not able to come apart so I am back on the hunt for a clock or smaller 12 pointed pattern.
I used a vintage size 80 thread Star Six Cord shade 144.5. The finished piece measures 8 inches or 20 cm diameter. I had some issues with the thread breaking at a few rings. Ahh the joys of using vintage thread.