I had already admired this snowflake tatted by others, but after Clyde so graciously gifted me with one of his I had to try it myself. I used this size 20 Flora thread first as I was afraid it would be too difficult and I would waste my hand dyed thread. Not so! It is very simple, especially once you "learn" it.
I used approximately 20 yards of thread in size 20. I put 10 yards on each shuttle and had very little left on either of them.
Let me go see which of my hand dyed threads wants to be a Celtic snowflake!