self etching or epoxy primer

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02-18-2012, 07:55 PM

#11

flat rate

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you shouldnt use etch under epoxies. That goes for epoxy seam sealers too.

02-20-2012, 02:11 PM

#12

onesickpantera

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Quote:

Originally Posted by KEVLARKAT32

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.

02-20-2012, 03:10 PM

#13

onesickpantera

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Quote:

Originally Posted by POWERPLAY J

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

02-20-2012, 03:57 PM

#14

POWERPLAY J

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Dupont:

Aluminum refinish system step A, 225S

Aluminum conversion coating step B, 226S

02-20-2012, 04:00 PM

#15

POWERPLAY J

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Quote:

Originally Posted by flat rate

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.

02-20-2012, 04:48 PM

#16

KEVLARKAT32

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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

02-20-2012, 05:54 PM

#17

FIXX

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Fixx

Quote:

Originally Posted by KEVLARKAT32

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?..

02-20-2012, 07:31 PM

#18

KEVLARKAT32

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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 .