Paint removal must match the knob material and finish. Brass, stainless steel, zinc alloy, plated metal, and coated surfaces react differently to heat, solvents, and abrasion. Remove the knob and test the method on a hidden area first.

Remove Paint Safely

Start with warm water and neutral soap to soften water-based paint. Use a plastic scraper or wooden stick instead of a steel blade. For thicker layers, apply a compatible remover with a cotton swab and lift the paint gradually. Avoid wire brushes, coarse sandpaper, strong acids, and uncontrolled heating.

The Canadian Conservation Institute warns that aggressive cleaning can remove original coatings and patina. The United States Environmental Protection Agency states that work on pre-1978 buildings may create hazardous lead dust, so old paint should be tested and handled with lead-safe practices.

Remove residue, dry the hardware, then inspect the spindle, rose, screws, and lock operation. Replace parts when corrosion, plating loss, cracks, or excessive free play cannot be corrected safely.

Manufacturer Control

A manufacturer controls machining, polishing, surface treatment, assembly, and testing. A trader depends more on external factories for finish matching and delivery control.

Established in 1994, we support OEM and ODM projects through drawing review, finish sampling, prototype approval, production, inspection, and export packing. Our published capacity reaches up to 800,000 pairs or sets per month.

Project Sourcing Checklist

Confirm material, finish sample, door thickness, spindle size, latch compatibility, packaging, spare parts, and lead time. Quality checks should cover dimensions, operating torque, free play, finish consistency, corrosion resistance, and carton protection. BS EN 1906:2012 defines test requirements for door knobs and Lever Handles operating latches or locks.