While researching places that can help with a chair repair, I came across a wood shop that offered classes – and living by the philosophy of “where there’s a class, there’s a Keltie”; I signed me, and one of my friends, up for one immediately! Using reclaimed walnut; we cross cut, drilled, routed and sanded our pieces to cheese presenting perfection.    Wood Thumb, in the SOMA district of San Francisco, is a company started by two…