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Offshoreonly.com (https://www.offshoreonly.com/forums/)
-   Detailing, Painting, & Fiberglass (https://www.offshoreonly.com/forums/detailing-painting-fiberglass-167/)
-   -   self etching or epoxy primer (https://www.offshoreonly.com/forums/detailing-painting-fiberglass/270904-self-etching-epoxy-primer.html)

flat rate 02-18-2012 07:55 PM
you shouldnt use etch under epoxies. That goes for epoxy seam sealers too.

onesickpantera 02-20-2012 02:11 PM
Originally Posted by KEVLARKAT32 (Post 3620906)
I powdercoated this block in my old race boat , took 45 in over to get to 400 degrees . It was a waste of my time as powdercoat shows a ton of orange peel , when scratched it is tough to match . When you get down to it powdercoat is way over rated , I just blast, epoxy prime and paint . I sold my powdercoating business
Was that in your 24'? I bet that took forever to get to temp!

I do powder coating for small parts as it's easy(for me) and the clean up involves a broom. I'm doing all the brackets, valve covers, etc in flat black. Just did all my steering components on my sled this year and I really like the flat black.

onesickpantera 02-20-2012 03:10 PM
Originally Posted by POWERPLAY J (Post 3620743)
I don't have the #'s off hand. I can get back to you Mon when I get to the shop. Or ask the jobber you get your supplies from. I sanded and smoothed out my intakes before paint. A friend of mine clear powdercoated his.
Thanks J. I can ask the store I get my stuff from now that I know there is such a thing. LOL

POWERPLAY J 02-20-2012 03:57 PM
Dupont:

Aluminum refinish system step A, 225S

Aluminum conversion coating step B, 226S

POWERPLAY J 02-20-2012 04:00 PM
Originally Posted by flat rate (Post 3620992)
you shouldnt use etch under epoxies. That goes for epoxy seam sealers too.
You are correct. I used the term etch loosely, the conversion coat dyes the alumimum blue.:)

KEVLARKAT32 02-20-2012 04:48 PM
Even with my oven pre-heated to 450 it took 45 to an hour to get to 400 . It was a waste of my time . Powdercoat really is crappy finish shows a ton of peel and almost impossible to touch up .

Powdercoat is perfect for production parts and 9 times out of ten whoever powdercoated didnt prep the part correctly

FIXX 02-20-2012 05:54 PM
Fixx
 
Originally Posted by KEVLARKAT32 (Post 3622290)
Even with my oven pre-heated to 450 it took 45 to an hour to get to 400 . It was a waste of my time . Powdercoat really is crappy finish shows a ton of peel and almost impossible to touch up .

Powdercoat is perfect for production parts and 9 times out of ten whoever powdercoated didnt prep the part correctly
I'm no pro at powder coating,have you ever tryed pre heating the part before powder coating? then powder coat the part then bake it?..

KEVLARKAT32 02-20-2012 07:31 PM
you can but that is not they way its done in business as there is no way to limit how much powder goes on and too thick it chips . Powdercoat is best used on plant hangers that get bent , washed powdercoated then in a box in 15 min . Ever tried to remove powdercoat ? Either a burn-off oven or chem strip then blast , F all that blast , epoxy , urethane and your done .

POWERPLAY J 02-20-2012 07:35 PM
Powdercoat never looks as good as paint. And it is impossible to repair. Also not as durable as people claim. My .02

KEVLARKAT32 02-20-2012 08:46 PM
I'm with you 100% !!!! I used to be the business , PC truly amature hour


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