Cleaning spray paint from tools, especially spray guns, is vital for maintaining their performance. The method depends on whether the paint is wet or has already hardened.
For Wet Spray Paint (Immediately after use):
This is the easiest time to clean. The cleaning agent depends on the paint you used:
- Water-Based Spray Paint: Flush the equipment with water until it runs clear.
- Solvent-Based Spray Paint (including 2K and cellulose): You must use a dedicated gun wash or the appropriate thinner for the paint. Run the thinner through the spray gun until all traces of colour are gone. Disassemble the nozzle and air cap and clean them separately.
For Cured / Hardened Spray Paint:
This is more difficult and requires stronger solvents and more time.
- Disassemble: Take apart the spray gun nozzle, air cap, and needle. For other tools, remove any plastic or rubber parts that could be damaged by the solvent.
- Soak the Parts: Submerge the metal components in a powerful gun wash or a paint stripper. Let them soak for several hours or even overnight. This will soften and break down the hardened paint.
- Mechanical Cleaning: After soaking, use a spray gun cleaning kit, which includes small brushes, picks, and needles. Gently scrub and pick away the softened paint from all the small orifices and threads. Never use a hard metal tool that could scratch or damage the delicate parts.
- Final Flush: Once all the cured paint is removed, reassemble the tool and give it a final flush with clean thinner to remove any last residue.