I started planing down the split birch staves for the Western Arctic atlatl darts and realized I still didn't quite have a clear picture in my mind of what I was aiming for so I paused to do a bit more planning. A few weeks ago, Greg Hare sent me the measurements for four ice patch dart shafts. The shafts range in length from 149 to 220 cm. I traced out the dart diameters on a long piece of brown paper. It helped a lot. Hopefully I can get into the workshop tomorrow and finish whittling down the birch.