Instruments constructed with wood show greater resistance to time and the extreme temperatures of each region or time of year.

Even using the same species of wood, glue and varnish to build an instrument each react in a specific way similar and natural to its physical body, expanding with humidity, and retracting with heat.

With the passage of time and due to its use, with exposure to light and humidity, the violins natural wear is inevitable.

To slow the process of wear, aesthetic or just loss of sound, one should maintain the instrument in a dry place, without the exposure to sunlight or humidity. These precautions prevent discoloring, scratches, or even deformations of the instrument body.

So that a harmonic, physical, or aesthetic restoration can take place, it is necessary that one has a comprehension of the physical structure, mechanics, and the chemistry of the materials and instrument in question. (wood type, glue, varnish, acoustic and aesthetic mathematics)

By using inadequate material to restore an instrument can jeopardize the function or even cause the instrument to irreversibly loose sound power, principally in the change of varnish and adjustments.