When it comes to the design and layout of the models, two working philosophies can be followed: either auteur inspiration with a symmetrical model for a modern finish with full varnish or moderate patina, or replication following the original instrument. We follow the characteristics in detail, right down to the traces of tools used in the making of the instrument, just like those found on the old instruments of the great classical masters, giving a glimpse of the construction methods and the authenticity of entirely hand-made craftsmanship.
    In all cases, attention is paid to the geometrical characteristics of the model's outline using traditional tracing techniques, and to its arching and tuning, with the aim of obtaining the best possible results according to the given starting materials. The aim is to achieve the best possible characteristics in terms of acoustics, timbre, projection and balance, while respecting the style of the old Italian masters.
    To achieve this, we draw inspiration from the precepts set out in the various publications on acoustic research by J.Curtin, M.Schleske, E.Jansson, N.Harris, O.E.Rodgers, G.Stoppani.
 
     Professional training is constantly evolving, in terms of acoustics and chemistry applied to lutherie, notably through workshops at Fertans on the manufacture of its own varnishes.