ForMatter/Finishes/coating/Nitrocellulose lacquer
finish_coating_lacquer_nitro

Nitrocellulose lacquer

coating · polished · nitro lacquer, NC lacquer, vintage lacquer

A clear or pigmented film that dries by solvent evaporation alone — no chemical cure. Sprays on, flashes off, builds in coats. The traditional finish on Steinway pianos, Fender Stratocasters, mid-century radio cabinets. Reads as glassy in fresh coats, hairline-cracks (lacquer-checking) in old ones, refinishable in place forever.

Cellulose nitrate dissolved in lacquer thinner (toluene, MEK, butyl acetate blend), pigmented or clear. Spray-applies in 8–12 thin coats with light sanding (400–600 grit) between every 2–3. Final film 50–100 µm. Cure is solvent flash, not chemical crosslink — every coat melts into the previous, so refinishing in place is one of the lacquer hallmarks. Drawback: the same solvent-fusibility means alcohol, ammonia, citrus oil dissolve the finish; UV and time embrittle the film into a craze pattern (lacquer checking) prized on vintage instruments.

character — glassy clear when fresh, ages into hairline crackle, repairable forever, plastic / pigment-rich when colored.

Finish properties

  • levelpolished
  • subcategorysolvent-evaporation lacquer
  • applies towood

Incompatibilities

  • outdoor service (UV embrittlement)
  • contact with alcohol / ammonia / citrus solvents
  • VOC-restricted jurisdictions

Second life

reversibilitymoderate — most coatings can be stripped chemically (methylene chloride for paint, NaOH for some powder coats) or thermally / mechanically (sandblasting). Some specialty coatings (DLC, ceramic) require commercial-service strip.
blocks substrate recyclingno
renewabilityfield- to shop-renewable — most paint and clear coats can be touched up or re-coated in service; powder coat and PVD coatings require a coating-house re-application.

SSPC / NACE surface-coating standards; manufacturer technical literature for the specific coating chemistry.

Citations