How many coats of high build do you guys usually apply? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 09-26-2011, 09:18 PM
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How many coats of high build do you guys usually apply?

Since I've never done an all over, I haven't really block sanded a whole car (except for this filler work).. So I shot 2 coats of spi 2k primer (Regular). Took about 2/3 of the gallon (67 fastback).. Not sure if that's normal. Was using a 1.8 tip for the first coat. I had to go realllly slow.. So I thinned it a bit (Which I didn't want to do) and it seemed to flow nicer.

But anyways, 2 coats, I haven't sanded yet, and I can still see scratches.. So I'm going to sand, but how many coats do you guys usually apply a time?

(I know someones answer is going to be "Until the car is straight", which is why I'm wondering how many you apply at a time, and on average, how much of a gallon do you go through on a car)

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Old 09-26-2011, 09:33 PM
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Well first i try to finish off any bodyfiller with 100 grit then i spray 1 wet coat over just the body filler areas then go back and spray 2 wet coats over everything, so that way you have 3 coats of primer over body filler areas. This always works for me because you have a little extra material for blocking over body filler.
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Old 09-26-2011, 10:47 PM
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Well I have 2 coats of epoxy over the whole thing as well.. Just wondering if most people spray 3 coats, guide, 3 coats, etc.. Go through a whole gallon, 2 gallons, etc?
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Old 09-27-2011, 10:03 AM
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How 'bout a wise *** answer??

It takes as much as you need to get the substrate to the condition needed to do the final top coat.

That's determined by how you finished the metal, the filler and epoxy - with 180, 220, 320 or whatever your final wet 'n' dry sanding was before the 2K. My final sanding is usually with 600 so don't need much.
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Old 09-27-2011, 12:06 PM
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Nooooooo, I specifically said that's not the answer I'm looking for!

Let me rephrase, shall I? How much do you usually go through? On a 60's restoration.
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Old 09-27-2011, 12:42 PM
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Originally Posted by JohnnyK81
Nooooooo, I specifically said that's not the answer I'm looking for!

Let me rephrase, shall I? How much do you usually go through? On a 60's restoration.
Yeah I know, I read your OP ..... but ...... my post 4 is still the answer

Remember as an amateur, you don't know the short cuts yet so you suffer the pain ($$$$) just like I, as an amateur, do with every car I paint
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Old 09-27-2011, 01:19 PM
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These ambiguous answers must stop.

I should have bought some lights and powder coated this bad boy.. haha
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Old 09-27-2011, 02:23 PM
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Originally Posted by JohnnyK81
These ambiguous answers must stop.

I should have bought some lights and powder coated this bad boy.. haha

What is ambiguous about the fact that you have to work on the substrate until it's ready to paint.

Have a good time as I just unsubscribed from this post - that no one else has bothered with since yesterday, 11:18PM EDT - forever on Hotrodders.

Bye
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Old 09-27-2011, 02:42 PM
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Touchy people on this site.. I meant in general. Surely you people have calculated an average of what you usually use.

I think I'm unsubscribing too.
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Old 09-27-2011, 04:14 PM
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90+ percent of the shops I talk to, spray three coats for first blocking with 180.

If it is blocked out good, they may now spray two or three coats for final sanding with anything from 320-600.

Myself, I do three and 180, then do three more and 180 and then three more and 320 dry for finishing.

It is what ever works for you.

Now on a new car and a production shop doing a minor repair, they may do two or three coats, block and may finish sand over their 180 with 400-600, I can't bring my self to do that but a lot of good painters can and do.
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