The word is that our mast is being delivered to us in the form of a young pine tree. We will cut it to length, strip the bark, shape the base and that's it. Otherwise we would use cedar and work it with a plane. Shimojo san's masts are square in section, tapering from the partner down to the step. Above the partners they are oval in section, slightly wider side-to-side than fore and aft.
There will be multiple holes in our step to allow the mast to have different rakes, or angles. Shimojo san says as the wind picks up you want the mast to rake further back. In very low winds it rakes forward. Sabani also have a curious system of mast wedges (illustrated here with the small sabani in the shop). In high winds you put the side wedges together to make the mast lean into the wind. I know of two naval architects who should be reading this blog and I hope at least one of them comments on these sailing arrangements.