The gaff is 1" thick and is rounded over with a 1/2" cutter to give a semi circular section to the edges.
Here is the router with bearing guided cutter fitted.
Here the gaff is clamped to the saw horses and is being rounded over.
And, lastly, the gaff is being finish sanded by hand on the saw horses.
That's two spars finished, and two to go! I will do the boom next.