In preparation for spiling the planking on the Haven I build a pair of compass dividers. In boat building there's a method called spiling and it is the process of determining the shape of a plank that goes on your boat. In order to do this you need a good pair of compass dividers. Those old-school compass dividers we all had in grammar school just isn't gonna cut it. So, I made a pair that is accurate and will lock in place. In this episode of tool making I'll show you how I made pair of compass dividers worthy of passing down to your heirs!