Paint over powder coat
 

I had some aluminum parts powder coated and frankly, I've never been a
big fan of the process.
Too glossy, shows fingerprints easy and to me, it looks like a bad
paint job would -- because you can see
the "globs" when the light hits it just right.

You know, like paint that was put on too thick.

Anyway, I was wondering if a light sanding might make a good surface
for some paint.

Either a Polane 2 part or I have a SW all surface oil based enamel
that I love (which I'll try anyway).

The all surface enamel may work because I know powder coat is
basically a plastic surface and may need something "gentler" than a 2
part professional finish.

Any thoughts?

Paint over powder coat
 

On Tue, 24 Mar 2009 12:52:59 -0700, mkr5000 wrote:

I had some aluminum parts powder coated and frankly, I've never been a
big fan of the process.
Too glossy, shows fingerprints easy and to me, it looks like a bad paint
job would -- because you can see the "globs" when the light hits it just
right.

You know, like paint that was put on too thick.

Anyway, I was wondering if a light sanding might make a good surface for
some paint.

Either a Polane 2 part or I have a SW all surface oil based enamel that
I love (which I'll try anyway).

The all surface enamel may work because I know powder coat is basically
a plastic surface and may need something "gentler" than a 2 part
professional finish.

Any thoughts?

Had you asked for _knowledge_ I would have kept my mouth shut (or at
least posted a much shorter reply). But you want thoughts, so...

I think there are different kinds of plastic that qualify as "powder
coat". Most (I think) are thermoplastics that melt when you heat them,
but I know my brother has spoken about getting something powder coated
with epoxy, which is a thermoset plastic. I can certainly imagine a 2-
part system that goes on dry, then melts with heat and starts
polymerizing.

So I think you should experiment, if you can, to find out what sticks and
doesn't attack the powder coat.

--
http://www.wescottdesign.com

Paint over powder coat
 

On Tue, 24 Mar 2009 12:52:59 -0700 (PDT), mkr5000
wrote:


Anyway, I was wondering if a light sanding might make a good surface
for some paint.

Page 9 of this document gives directions for painting over polyester
powder coat:
http://www.hoffmanonline.com/product...&itemID=139152

--
Ned Simmons

Paint over powder coat
 

"mkr5000" wrote in message
...
I had some aluminum parts powder coated and frankly, I've never been a
big fan of the process.
Too glossy, shows fingerprints easy and to me, it looks like a bad
paint job would -- because you can see
the "globs" when the light hits it just right.

You know, like paint that was put on too thick.

Anyway, I was wondering if a light sanding might make a good surface
for some paint.

Either a Polane 2 part or I have a SW all surface oil based enamel
that I love (which I'll try anyway).

The all surface enamel may work because I know powder coat is
basically a plastic surface and may need something "gentler" than a 2
part professional finish.

Any thoughts?

Depends on the powder coat. My shower door is powder coated. Does not show
finger prints, white may be part of the reason. Had some bubbles form and
painted over them after cleaning with white appliance epoxy. Still looks
good.