New Krylon Spray Paint - Don't Bake It??
 

The new breed of Krylon Spray paint - remember how it was 25 years ago,
all thin and runny but fast drying?? Well, I put some on a transformer
end bell(metal content) which was primed and baked @225F for ~1.5 hrs
and then air cooled a while, and then baked the nice RED Krylon coat.

It came out with nice tiny tiny bubble marks on a large part of it.

Not sure if it was outgassing from the primer making its way up
(automotive "sanding primer", grey) or if this is what the new Krylon
does?? Anyone got experience with this?

Btw, the "paint" appears to be a self leveling plastic thing - the
finish is fairly amazing in that regard, and the final product feels
"plasticy" imho. Cool stuff in that it's not "paint" that i can see.

_-_-bear

PS. just resanded the bubbles and recoated - air dry this time.

It came out with nice tiny tiny bubble marks on a large part of it.

If it's truly "tiny tiny" and not actually bubbles, then it might be
the "orange peel" effect. With other brands of spray paint this is
caused by the paint being clumpy when sprayed, and the clumps dry too
quick before they really level nicely. Heating up the spray-paint can
to "warm water" temperature is usually the cure.

Otherwise I suspect that baking @225F caused the outer skin to dry out
before the inner skin had outgassed enough. Not necessarily the
primer, it could have been the bottom of the finish coat.

I usually do my baking at lower temps (140-150F) and longer times.

Tim.

"Tim Shoppa" wrote: (clip) Heating up the spray-paint can to "warm water"
temperature is usually the cure.(clip)
^^^^^^^^^^^^^^^^
I like to hold the can in a stream of hot water under the tap, and shake it
so I hear the ball rattle. This mixes the paint, thins it, and raises the
propellant pressure all at the same time.

Don't do what a friend of mine did, though. He put the spray can in a
coffee can of water, and put it on the stove to heat. Then he went outside
to talk to a friend, "just for a minute." The bottom blew out of the spray
can, and it flew like a rocket and broke the ceiling, spraying red paint all
over the area. In addition, it bulged the bottom of the coffee can so hard
against the stove grate that it broke it.

Now I know why they have all the disclaimers, who the hell would put a can
of spray paint into an oven?
"Leo Lichtman" wrote in message
...

"Tim Shoppa" wrote: (clip) Heating up the spray-paint can to "warm
water" temperature is usually the cure.(clip)
^^^^^^^^^^^^^^^^
I like to hold the can in a stream of hot water under the tap, and shake
it so I hear the ball rattle. This mixes the paint, thins it, and raises
the propellant pressure all at the same time.

Don't do what a friend of mine did, though. He put the spray can in a
coffee can of water, and put it on the stove to heat. Then he went
outside to talk to a friend, "just for a minute." The bottom blew out of
the spray can, and it flew like a rocket and broke the ceiling, spraying
red paint all over the area. In addition, it bulged the bottom of the
coffee can so hard against the stove grate that it broke it.