We are cutting the tenons and mortises in preparation for the soleplates to be installed across the whole building. These are a type of joint that have been used for hundreds of years to join two pieces of wood (or other material). The tenon part acts as a peg, whilst the mortise is the hole/slot in which the tenon is inserted. They create a very strong, stable joint. We are protecting the original wattle and daub panels whilst doing this.