Most airbrushes that come in for repair were not worn out by heavy use — they were ruined by poor cleaning. Dried paint in the head and packing makes the needle stiff, the spray uneven, and eventually cracks the head. The routine below takes under two minutes and adds years to the tool.
Between colours
- Pour out the leftover paint.
- Add cleaner or clean water, depending on the paint, and spray into a jar or rag until it runs clear.
- Cover the aircap lightly with a finger and press the trigger so air bubbles back into the cup or bottle, then spray through again. Repeat two or three times.
- Wipe the needle tip with a soft cloth dampened with cleaner.
That is enough for colour changes during the day.
Deep clean at the end of a session
- Loosen the needle locknut first, then withdraw the needle slowly. Never push or pull the needle while the nut is still tight.
- Wipe the needle from the back towards the tip, never from the tip back — that bends the point.
- Remove the aircap and head, soak briefly in cleaner, and clean with a soft brush.
- Clean the internal passage with the fine brush from the cleaning kit.
- Reassemble and put a drop of airbrush lubricant on the needle where it passes through the packing.
What never to do
- Never soak the whole airbrush in cleaner overnight. It attacks the packings and O-rings, which then leak air and let paint back up.
- Never poke the head opening with anything hard. A pin, wire or sewing needle will flare the opening and it will never spray straight again.
- Never force the needle in. Resistance means dried paint. Clean it, do not push harder.
- Never use aggressive thinners on water-based paint. Match the cleaner to the paint.
- Never skip the moisture trap. Water from the compressor spots the work and rusts internal parts.
A maintenance schedule
- Every session — clean between colours, deep clean at the end.
- Monthly — check the O-rings and packings are still soft and not swollen; check the needle tip under magnification.
- Yearly, or whenever the spray turns uneven — replace the packing and O-rings. They cost little and affect the work a great deal.
Common symptoms and their causes
- Spitting or uneven flow — usually dried paint at the head, or the needle not seated.
- Bubbles blowing back into the cup — loose head or loose aircap.
- Paint flowing without pulling the trigger — worn packing or the needle not seating.
- Spidery, split lines — paint too thick, or dried paint on the needle tip.
Nearly all of these are fixed by cleaning properly and replacing a small part. We stock needles, heads, aircaps, packings and O-rings for every model we sell, plus a 7-piece airbrush cleaning kit for deep cleans.