Posted for "Gary Edwards" <gary21sn@hotmail.com>:

 I never leave anything in my spray gun except gun cleaner after I have
disassembled the gun and completely washed all components especially the spray
nozzle pieces every time I use it.  It is especially important when using WLS
since it has a lot of solids in it as the gun will get build up with that
sticky stuff after just one use.  It takes almost as long to clean the gun
after each use as it does to apply the primer.
 
 And it is very important to thoroughly mix or shake the contents of the can
before adding the catalyst as the solids have settled to the bottom 1/2 to 1
inch of the can.  The solids are what does the work in filling in the low
areas.
 
 Ask a painter, and they may well tell you that leaving an uncleaned spray gun
around is akin to having greasy wrenches.
 
 Gary Edwards


[Since I was the only one who suggested leaving material in a spray gun, I'm obviously the target of your statements... no problem, I understand completely.  I foolishly left out the part about first removing the nozzle and tossing it into a can of thinner... de riguer anytime I put down the gun for more than a short while.  Putting the gun with paint into the freezer stops it from curing and doesn't harm either the material or the tool in any way.  I learned this trick from a painter.  Once the material is consumed and the painting completed the gun is obviously thoroughly cleaned.  I've been following this practice with the same guns for the past 7 years, and the paint is still sticking and the guns still shooting.  Thanks for forcing the clarification of the issue, though.  <Marv>        ]