Make the RAFTERS
The pattern is traced on the rafter blank.
We cut the 12 degree angle in the upper and lower ends of the rafter with a circular saw.
We cut the curved sections of all our rafters on a large bandsaw.
But, if working alone a jigsaw cuts almost as well. I use a heavy, stiff blade on my jigsaw for this 2″ thick Western Red cedar.
My friend Doug is a very artistic and skilled carpenter. We worked on quite a few design ideas for the curved rafters. We wanted the most elegant curve with the minimal waste of material. We decided on the idea of pairs of rafters that were supported with a ridge beam. And that each rafter tapered down from the center top to the sides. This was done by using two different radius curves. The homeowners approved the design and we all thought it looked a bit like an upside down wooden boat hull.
Each rafter was then chamfered with a sanding attachment on an angle grinder.
Sanding Curved Rafters
These rafters were set in place and toe screwed to the beams. And also screwed to the galvanized strapping attached to the ridge beam.
Then the temporary supports for the ridge beam can be removed. Or left there until all the braces are added.