Polyester primer... anyone use it over bare metal??
#227535
02/17/09 12:26 AM
02/17/09 12:26 AM
|
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
OP
Too Many Posts
|
OP
Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
|
Anyone use polyester primer over bare metal? I've been looking at the Evercoat Slick Sand polyester primer and thinking it might be perfect for me. I'm doing a repaint of a daily driver type car that's in overall good shape, but its hood and front fenders are pitted to hell from stone chips. Looks like someone drove this thing behind a gravel truck or something. Looks to me like the slick sand should be right up my alley. So I would be spraying it mostly over existing scuffed OEM paint with some small bare metal areas. No doubt there will be some small bare metal spots where I take it all the way down with the sander, but will probably 99% be scuffed OEM paint. The P sheets for the paint I plan to use say it can go right over this stuff and the P's for the slick sand say to go right over metal without an etch or sealer. Sounds almost too easy...? Surely some of you guys have experience with this stuff. 
|
|
|
Re: Polyester primer... anyone use it over bare metal??
[Re: DaytonaTurbo]
#227536
02/17/09 12:46 AM
02/17/09 12:46 AM
|
Joined: Jan 2003
Posts: 28,596
Shopping @ HoBo Fright
340SIX
Doc Flappergas's Evil Twin
|
Doc Flappergas's Evil Twin
Joined: Jan 2003
Posts: 28,596
Shopping @ HoBo Fright
|
Yes we used to at the shop I helped out at{freinds place} used it after stripng cars to bare metal. but we sanded it with 80 first. so i giess it had a chemical and machnical adheasion. Just don't leave it out to get wet since ther is no epoxy under it to seal the metal 100% Nothing at the shop got epoxy ecept a few thongs we did for ourself that was going to be a long long time before it was 100% done  Jobs came in and went right back out and never sat outside in rain or anything
|
|
|
Re: Polyester primer... anyone use it over bare metal??
[Re: DaytonaTurbo]
#227537
02/17/09 12:56 AM
02/17/09 12:56 AM
|
Joined: Jan 2003
Posts: 5,664
South Dakota
hotairballoonpilot
master
|
master
Joined: Jan 2003
Posts: 5,664
South Dakota
|
so you know PPG's shopline brand sands ike a rock by hand but works with an air sander good. Just watch the build up. I got it to thick on a 32 buick on some body lines and had problems with it bridging over that small area and then cracking. like what was said DON'T GET IT WET!
Contact Me about AMD Prices
|
|
|
Re: Polyester primer... anyone use it over bare metal??
[Re: DaytonaTurbo]
#227541
02/17/09 11:50 AM
02/17/09 11:50 AM
|
Joined: Dec 2007
Posts: 1,572
Jacksonville Florida
elitecustombody
pro stock
|
pro stock
Joined: Dec 2007
Posts: 1,572
Jacksonville Florida
|
bad idea, if you have just a few small sandes thru on a corner or edge it'll fly, but I wouldn't apply it over bigger spots, use rattle can etching primer on those spots,scuff with brown pad and then it'll be fine, non of Evercoat polyester primers bond well to bare metal, no matter what the label on the can says,and if you have some body panels completely down to bare metal, I'd suggest using epoxy primer first, for a piece of mind, it's worth to spend couple hundred bucks ,especially if you plan on keeping the car for a while 
|
|
|
Re: Polyester primer... anyone use it over bare metal??
[Re: elitecustombody]
#227542
02/17/09 01:19 PM
02/17/09 01:19 PM
|
Joined: Jan 2003
Posts: 28,596
Shopping @ HoBo Fright
340SIX
Doc Flappergas's Evil Twin
|
Doc Flappergas's Evil Twin
Joined: Jan 2003
Posts: 28,596
Shopping @ HoBo Fright
|
Quote:
bad idea, if you have just a few small sandes thru on a corner or edge it'll fly, but I wouldn't apply it over bigger spots, use rattle can etching primer on those spots,scuff with brown pad and then it'll be fine, non of Evercoat polyester primers bond well to bare metal, no matter what the label on the can says,and if you have some body panels completely down to bare metal, I'd suggest using epoxy primer first, for a piece of mind, it's worth to spend couple hundred bucks ,especially if you plan on keeping the car for a while
Do you find they do not bond well on bare metal with just a chemical bond or with a machincal one?
We always striped a car with aircraft then cleaned it well. then Ran a DA over everthing with 80 so it had both?
Just wondering if it was just a problem for you with a chemical bond or both? 
Remember "My poor car" was done in a non resto shop. They mostly did insurance in and out jobs. I helped him out plenty on stuff and my car was done here and there when time was free, also used left over evercoat ultamite primer when some was left over from something else. and the paint was cheap R-M limco supreme. I have 800 in the whole thing.
My next car will be done right I hope.
|
|
|
Re: Polyester primer... anyone use it over bare metal??
[Re: 340SIX]
#227543
02/17/09 03:44 PM
02/17/09 03:44 PM
|
Joined: Dec 2007
Posts: 1,572
Jacksonville Florida
elitecustombody
pro stock
|
pro stock
Joined: Dec 2007
Posts: 1,572
Jacksonville Florida
|
Quote:
Quote:
bad idea, if you have just a few small sandes thru on a corner or edge it'll fly, but I wouldn't apply it over bigger spots, use rattle can etching primer on those spots,scuff with brown pad and then it'll be fine, non of Evercoat polyester primers bond well to bare metal, no matter what the label on the can says,and if you have some body panels completely down to bare metal, I'd suggest using epoxy primer first, for a piece of mind, it's worth to spend couple hundred bucks ,especially if you plan on keeping the car for a while
Do you find they do not bond well on bare metal with just a chemical bond or with a machincal one?
We always striped a car with aircraft then cleaned it well. then Ran a DA over everthing with 80 so it had both?
Just wondering if it was just a problem for you with a chemical bond or both?
Remember "My poor car" was done in a non resto shop. They mostly did insurance in and out jobs. I helped him out plenty on stuff and my car was done here and there when time was free, also used left over evercoat ultamite primer when some was left over from something else. and the paint was cheap R-M limco supreme. I have 800 in the whole thing.
My next car will be done right I hope.
It was years ago,thank God it was my own Suburban, I molded ABS flares to new fenders,the fenders were grinded and sanded with 80 grit, in about 2 months I started seeing blisters,short strand fiberglass has stuck pretty well to steel,but all bare metal areas that were covered with Evercoat FeatherFill or SlickSand,can't remeber which one,has lifted, so since then I never use polyester primer over bare metal,there is no mechanical or chemical adhesion,
|
|
|
Re: Polyester primer... anyone use it over bare metal??
[Re: DaytonaTurbo]
#227545
02/17/09 06:09 PM
02/17/09 06:09 PM
|
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
|
Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
|
Quote:
If I have some small bare metal areas from going too far with the sander, ie a 2" diameter circle, can I use an etching primer then hit it with the polyester primer?
Will it stick well enough for small areas like that? Or should I just epoxy those areas while I'm at it before spraying on the polyester?
Your better off sealing the area with epoxy primer to give the poly fill a good foundation.
|
|
|
Re: Polyester primer... anyone use it over bare metal??
[Re: DaytonaTurbo]
#227546
02/17/09 06:55 PM
02/17/09 06:55 PM
|
Joined: Dec 2007
Posts: 1,572
Jacksonville Florida
elitecustombody
pro stock
|
pro stock
Joined: Dec 2007
Posts: 1,572
Jacksonville Florida
|
Quote:
If I have some small bare metal areas from going too far with the sander, ie a 2" diameter circle, can I use an etching primer then hit it with the polyester primer?
Will it stick well enough for small areas like that? Or should I just epoxy those areas while I'm at it before spraying on the polyester?
that's what etching primer in rattle can is for and will do just fine, no need to get all the mess started with epoxy for a few small spots
|
|
|
Re: Polyester primer... anyone use it over bare metal?
[Re: 340SIX]
#227547
02/17/09 07:19 PM
02/17/09 07:19 PM
|
Joined: Sep 2005
Posts: 6,516
Santa Cruz, California
Lefty
master
|
master
Joined: Sep 2005
Posts: 6,516
Santa Cruz, California
|
Quote:
Nothing at the shop got epoxy ecept a few thongs we did for ourself
That sounds painfull... 
|
|
|
Re: Polyester primer... anyone use it over bare metal?
[Re: Lefty]
#227551
02/18/09 12:28 AM
02/18/09 12:28 AM
|
Joined: Jan 2003
Posts: 28,596
Shopping @ HoBo Fright
340SIX
Doc Flappergas's Evil Twin
|
Doc Flappergas's Evil Twin
Joined: Jan 2003
Posts: 28,596
Shopping @ HoBo Fright
|
Quote:
Quote:
Nothing at the shop got epoxy ecept a few thongs we did for ourself
That sounds painfull...
That my friend was a typo the O is right next to the I
|
|
|
Re: Polyester primer... anyone use it over bare metal?
[Re: 340SIX]
#227552
02/18/09 01:47 PM
02/18/09 01:47 PM
|
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
OP
Too Many Posts
|
OP
Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
|
Quote:
Quote:
Quote:
Nothing at the shop got epoxy ecept a few thongs we did for ourself
That sounds painfull...
That my friend was a typo the O is right next to the I
Really? I thought maybe that explained the pink...
|
|
|
Re: Polyester primer... anyone use it over bare metal?
[Re: 340SIX]
#227554
02/18/09 05:10 PM
02/18/09 05:10 PM
|
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
OP
Too Many Posts
|
OP
Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
|
Quote:
Why would you prime or paint a Thong?
You mean you haven't seen pics of girls with the painted on bikinis...? 
|
|
|
|
|
