Making a hand made instrument starts by choosing the model, usually based on italian models, such as Stradivari, Guarneri, Amati, Montagnana, Guadagnini, etc.
After that, the raw material must be selected, the wood, which must be well seasoned (a minimum of five years since it was cut down).
Gervasio uses exclusively prime wood he selects and imports from Europe. Red german spruce or Valdifiemme for the tops, Balkan flamed maple for the back, neck and ribs, and ebony for the tastieras.
His elaboration method is based on the principles of the cremonian tradition, using an internal matrix (italian shape) that makes each instrument a unique unrepeatable piece.
Once the instrument is finished, it must be varnished in order to protect the wood from deterioration due to use and aging, and to modify it to improve the sound's timbre.
A high quality varnish for crafted instruments must also be crafted. As a result of that, and because each instrument is unique, it is the violing maker's job to know what kind of varnish he should use in each case.
Varnishes are prepared on an oil/ alcohol base as solvents and its characteristics and body are given by the resins, rubbers and scents, extracted from diverse trees and fossils.
The varnish is applied with a paint brush and then it is polished by hand using purified laquer.
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