compressors and moisture filters

That's a new one....too hot or overly hot yields more moisture trapped by the compressor trap. I can buy that due to WHEN the moisture was first noticed, in the middle of summer. However, I did not paint after mid-May and we hadhad extremely wet conditions for nearly 5-6 weeks just before I stopped regular painting. It likely accumulated and I didn't notice it and probably added it to the last 1/3 of the bottle of Alclad II. I just got a new bottle and now it's in a plastic bottle! I'll watch it from now on and give the trap a drainage punch after each use. The little moisture trap I added on needs a "T" fitting so it hangs down instead of horizontally placed as it is now. It may still work but it looks funny and I can't leave it that way....he he.

Thanks for your help gents.....

Bob

Thats what I was thinking - if you have moisture in your paint, no amount of moisture filters will help you there?

Or did you have moisture issues when using the primer? If that's the case, the moisture is likely to be coming from your compressor, rather than your paint - You possibly already have a combined filter regulator on your compressor & adding another will no doubt help.

If you find that you are still getting occasional problems, a clear air hose will give you a little bit of advanced warning of water coming down the line & if the compressor is being overworked, it will become hot & increase the amount of moisture created....

Not sure I understand.  Do you have water in the bottle, or does water show up in the finish when you airbrush?  A moisture trap prevents the later, not the former.  I think a moisture trap is a good investment.

Did you have a large amount left in the airbrush bottle and pour that remainder back in the Alclad bottle?  That is the only way I can see you'd get water from compressor back in the Alclad bottle.  I generally try to estimate how much paint I will need for an airbrushing session, to eliminate pouring paint back from airbrush bottle to source bottle. I must admit, however, that since Alclad is already thinned, ready to apply, I have poured excess back in source bottle (never gotten water from doing that, though).