Don Foreman wrote:
On Fri, 03 Dec 2010 00:44:20 -0500, "Michael A. Terrell"

Or you can punch a hole in the can and dump the paint into an
airbrush.

Video, please! I'd like a demonstration of how to punch a hole in a
pressurized aerosol can and capture the contents. Might this involve
use of a plastic bag and a .22 rifle?

Nah. In the "instructions" for using a spray can, they tell you that
when you're done with the job, turn it upside down so the tube only
gets propellant gas, and spray till the spray head is cleared out.

Of course, this uses up the propellant when about 1/2 the product is
left, at which point there is no excess presssure, and you can take the
top off with a "church key." ;-)

Cheers!
Rich