I and Akutsu-san went to Hashimoto today and insected the final results on the Doughnut Baffle production.
So far, it seems that the results are OK and within the constraints of bKAGRA. However, due to the baking procedure, scratches appeared on at least on side of each baffle. Yet, they will probably have no big impact on the scattering, according to the simulations.

The results plus some pictures taken at the facility, are summarized in a JGW document.