QUESTION ON FLOW COATING, DOUBLE CLEAR

RosharonRooster

RosharonRooster

Promoted Users
heard the other day this..

"If you spray 3-4 coats of clear, 800 grit and then spray 2 more coats when you go to sand it and polish it, you are only working with 2 coats of clear, not 5-6, because if you break thru the recent 2 coats. You will have a halo showing after you polish"

This has me wondering if this is actually true?.....
 
I think that in theory there is no way you should break through those two coats since you should not be going at it again with 800. Plus if you flow coat the next day it will likely burn into the previous coats. Interested in the pro responses.
 
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Back in the early days I flow coated House of Kolor clear following their TDS. They had you reduce it with some different sort of reducer. I wonder now if it was a more aggressive reducer intended to bite into the previous coats of clear.

Don
 
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RosharonRooster said:
heard the other day this..

"If you spray 3-4 coats of clear, 800 grit and then spray 2 more coats when you go to sand it and polish it, you are only working with 2 coats of clear, not 5-6, because if you break thru the recent 2 coats. You will have a halo showing after you polish"

This has me wondering if this is actually true?.....
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That doesn't sound right to me, however it may have something to do with how long they waited to do the flow coat.
 
Seems I remember someone saying that once you sand previous coats you start your build durability wise all over again. So two layers sanded isn't as good durability wise because you've broken the wet on wet bond that occurs when doing three. Plus you don't have that extra depth look that three layers has. It just looks better.
 
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i dont think you get as good of a link with doble coating. i do all of it in one shoot. if you put 5 coats on you can block it to death. i do 3 on nice driver cars. not everybody wants a show car. takes a lot of time and money to get it flat. my falcon will have a ton of clear on it because of the flake and stuff but i dont care if it's flat.
 
shine said:
i dont think you get as good of a link with doble coating. i do all of it in one shoot. if you put 5 coats on you can block it to death. i do 3 on nice driver cars. not everybody wants a show car. takes a lot of time and money to get it flat. my falcon will have a ton of clear on it because of the flake and stuff but i dont care if it's flat.
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I also use 3 coats of clear for most projects. If the body work is done right and you spray the clear on so each coat flows out, it won't take a whole lot of sanding to get it flat and buffed out.
 
RosharonRooster said:
Same here. But I've been debating on double clear my 60
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IMO it's worth it on stuff you want to look nice. You can get the same look though shooting 5 or even 6 coats at one time. Just have more sanding/blocking to do to eliminate the urethane wave. I think the reason three,sand, then three more is popular is because you don't have to deal with urethane wave that way. Either way there is about the same amount of work that you have to do. So a matter of preference as the end result is the same.
 
I did a black muirra years ago, seven coats of black
Lacqurt every weekend for four weeks; yes, it was the same as 28 coats.
All isocyanate clears; the first set does not count, and if you do 2nd set and breakthrough, you will see a halo and must spot with base and clear.
I've done it being stupid several times.
 
Chris_Hamilton said:
Wow Barry a Miura.:eek: Was it yours?
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I wish it were, but that year, there were 2 S's, a black and a red one; the car was perfect with 800 miles, but it was going to a big show in Vegas.
It came in second in paint, and a collector from Britten bought it From the guy a dealer I painted it for.
It was sometime around 1980, give or take; said $9000 to scuff and paint. The dealer had a fit and said he would not pay more than 4500 for the work, and I said do it yourself.
The next day, he called and said How about 7 grand, I said, 8 grand, take or leave it.
 
Barry said:
I did a black muirra years ago, seven coats of black
Lacqurt every weekend for four weeks; yes, it was the same as 28 coats.
All isocyanate clears; the first set does not count, and if you do 2nd set and breakthrough, you will see a halo and must spot with base and clear.
I've done it being stupid several times.
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Thank you
 
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