Restoration of a cabinet (instrument case) is a rather laborious and, as a rule, long-term occupation. It all depends on the structure (structure) of the parts, the type and chemical composition of the old factory coating. Old instruments, for the most part, have a shellac coating, which, in addition to an alcohol base, also contains a fatty component. Because of this, there are difficulties in how to make friends with modern, usually acid coatings (polyurethane or acrylic). Things are even more complicated with polyester (they are called "piano varnish") coatings. The choice of varnish quality, type and requirements for the result form a fairly wide range of prices. Cleaning of metal parts is also necessary, of course, it is possible to replace rollers, hinges, pedal pads at will or if necessary, polishing, replacing the garnishing cloth of the pedal lyre and music stand.
Working with the acoustic block includes a fairly wide range of various works. This is primarily work on restoring the soundboard. (drying, filling cracks, gluing, cleaning, varnishing. In some cases, changing the geometry and thicknesses to improve the final sound characteristics.) Painting the cast iron frame. .. and it does not necessarily have to be bronze paint. The 21st century involves a creative component. Here (as with the cabinet) you can express yourself, your taste... we can either keep or change the frame pins, and also update or change (although this is not always possible) the agraffes. The frame is also placed in the instrument and set up again, taking into account the age and other changes to the soundboard, to ensure optimal printing (string pressure on the soundboard). Replacement or repair-renewal of the pinblock. Installation of new pins, bass and treble strings. Repair and update of the counter keyboard (string damping mechanism) and replacement of the bushing on the damper pads, counter keyboard and damper holders (guide rails).
Keyboard trim and felt replacement; refinishing (grinding, whitening, polishing) of old bone overlays or replacing with modern plastic; black varnishing or replacement with new ones; hammer and hammer stem replacement or repair; damper replacement or just the damper felt; mechanism adjustment, tuning, and intonation.