My son Miles is in Normandy until August working on a crew fabricating trusses and other elements for the nave and choir of the cathedral. He is one of a half dozen American timber framers working on the project, which is being undertaken by two French companies https://www.remy-desmonts.com/ and http://ateliersperrault.com/ I believe there are 66 principal and secondary trusses 42 ft wide to be built for the nave and choir by Remy Desmonts, Miles' employer.

There is a large stock of oak logs 39 to 45 ft long and around 18" diameter at the small end to work with, all sourced in France. Apparently the working drawings are complex (and in progress) as each truss is slightly different due to vagaries in the wall layout. I believe the logs are to be sawn on two sides and hewn on the remaining two. The work will be done with a mix of power and hand tools.

I hope to be able to post some photos as the project progresses, but am not sure what the protocol will be. As well, my wife and I hope to visit in the spring - the opportunity is hard to pass up.