Ray C

I want to close the loop on my high-elevation decanting question. Right after I posted my question in January the only hobby shop here in Bogotá that sells Tamiya paints ran out of the primary shade I needed and I had to wait a month-and-a-half for more to arrive so I just got to try this procedure this week. I sprayed short bursts (about 3-5 seconds each) into the bottle and paused to let the paint settle a bit. Once I was finished the paint bubbled vigorously for about 20 minutes after which I didn't see any more activity. After an additional 10 minutes of rest I moved the bottle to a more secure location where I left it open overnight before closing it with the cap. Everything has worked as expected based on the guidance from everyone on the blog. Thank you all again and hopefully this might help someone in the future in some place like Denver.

I remember doing that many years ago when I got my first airbrush and before I had a compressor. I had to do that with the propellant cans to counteract the Venturi effect and extend the time I could use them before pausing.

Thanks; that is more or less what I was thinking of trying. It's reassuring to know someone with experience with the process thinks that's a sound approach in my environment.

Mark, Thanks again. I think I'm just going to have to try to use very little pressure on the nozzle cap as I begin decanting and start with very small amounts to see what happens, then if everything seems stable move on to larger amounts of paint.

Mark, Thank you. I guess my biggest concern is with the aerosol propellant presumably evaporating more rapidly under the lower air pressure here, do you believe that will tend to make the decanted paint more volatile with a stronger tendency to boil during the out-gassing process?

Like some others here, I'm also about to try decanting Tamiya TS-series paints for the first time but I have a specific concern about how the environment in my current location may need for me to adjust the procedures. I'm currently in Bogotá, Colombia (elevation 8,600 feet and cool temperatures - need a sweater or jacket in the mornings & evenings but shirt-sleeve weather during the afternoons, temperatures exactly like San Francisco but without the fog). How will the lower air pressure at this elevation plus the cool temperatures affect the out-gassing process?