I use a siphon-feed Paasche H for spraying primers and top coats. After a paint session, I hold the AB vertically for a moment so that the paint in the needle can flow back into the bottle. However, as I take out the bottle, a few drops of paint almost always comes out of the needle and create a mess. Is there a way to prevent this???
Have you tried backflushing the brush? Hold your finger (or a rag/or wad of paper towel) over the air tip and depress the trigger. You should see bubbles in the jar as it blows the paint back down the paint path.
I backflush with alcohol to clean the AB. Am I supposed to backflush before taking out the bottle?
I don’t use my Paasche H much anymore but when I did this is the procedure I used:
Removed the bottle containing paint
Held the brush ‘nozzle down’ and sprayed what was left in the nozzle/needle into a rag or container
Wiped the inside of the nozzle with a Q-tip, Cotton Bud or such
Attached a bottle containing thinner and sprayed until clear into rag/container
Probably lots of methods but this worked for me.
I don’t use a Paasche, I use a badger siphon feed. I do get drips when I take off bottle. Realizing that will happen, I always remove bottle while I hold the airbrush over my waste can. If I have enough trash in the can I then touch the feed tube to something to soak up that residual paint. In the rare circumstance that the waste can is empty, I daub end with a piece of paper towel. I always keep a piece of towel on my bench whenever I am airbrushing.