There are a ton of roof beams, and supports that need to be made. In our case we decided over the winter months to make a mould to laminate strips of oak together, rather than cut each beam. The mould was cut based on the beam shapes in the plans, and was then pressed together with each strip being glued in place.
The result was a "glue" up of laminations to make up a beam. We used reclaimed oak strips for the beams. These are all the middle beams - we also need to make beams for the sides of the roofing using a different template.
This is the process that we used to make the beam form.