I have have all the ribs formed, and glued onto the blocks. Wife’s old curling iron (shhh) makes a fine bending iron. The linings were more difficult than I anticipated. I ended up using a small branch from a goofy tree in my backyard. I think it’s some sort of cultivated form of birch, but it has pendulous branches like a willow. Whatever it is it worked alright. Still not thrilled with the how they came out so might take them out and try again. Practice makes,,,,,well an improvement over the first attempt I hope.