Duco finish procedure?

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Duco finish procedure?

Unread post #1 by bigfoot » Sun Jun 02, 2013 10:20 am

Anybody know the procedures for achieving Duco finish? Options for materials used?
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Re: Duco finish procedure?

Unread post #2 by bigfoot » Sun Jun 02, 2013 5:08 pm

Additional question evens if the first hasn't been answered yet.

What's the different between lacquer paint, acrylic lacquer, automotive lacquer?
Can surfacer/acrylic primer be sprayed on wood using 1.8mm tip?
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Re: Duco finish procedure?

Unread post #3 by moji » Sun Jun 02, 2013 7:05 pm

Found my reply on an old thread, so i'll post it here too:

For duco/ lacquer finish the standard finishing schedule goes like this:
Sand plywood to around 150- 180 grit
Spray a coat or two of lacquer primer
cover the whole panel with polituff or other polyester putty
sand down and smooth, reapply polituff if needed
spray a coat or two of lacquer primer
apply lacquer putty
sand down and smooth, reapply lacquer putty if needed
spray a coat or two of lacquer primer
if satisfied with the smoothness proceed to spray the color coat, then clear coat if needed.

If you desire to use acrylic lacquer, the process is similar to lacquer but the materials differ,
Sand plywood to around 150- 180 grit
Spray a coat or two of epoxy primer
cover the whole panel with polituff or other polyester putty
sand down and smooth, reapply polituff if needed
spray a coat or two of epoxy primer
apply glazing putty
sand down and smooth, reapply glazing putty if needed
spray a coat or two of epoxy primer
if satisfied with the smoothness proceed to spray the color coat, then clear coat if needed.


Lacquers in general were made for automotive use. Nitrocellulose lacquer is the regular lacquer commonly found today. Acrylic lacquer is a step or two higher as it is supposed to have better properties than regular lacquer, it is also more expensive. Its thinner is also much stronger than regular lacquer. 1.8mm tip is the recommended tip size for spraying primers especially high build primers
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Re: Duco finish procedure?

Unread post #4 by bigfoot » Sun Jun 02, 2013 10:50 pm

So Acrylic lacquer thinner is different from lacquer thinner?
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Re: Duco finish procedure?

Unread post #5 by moji » Sun Jun 02, 2013 11:11 pm

Yup its different, using lacquer thinner on acrylic lacquer wont be able to reduce it properly. Using acrylic lacquer thinner on regular lacquer will work though.
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Re: Duco finish procedure?

Unread post #6 by Komobi24 » Mon Jun 03, 2013 4:15 pm

Additional question..

Ratio:
Regular lacq paint: ?
Acrilyc lacq paint : ?

The same ratio?
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Re: Duco finish procedure?

Unread post #7 by JayL » Mon Jun 03, 2013 5:30 pm

Using acrylic lacquer paint my ball park ratio is around 1:3 max where 1 is the paint and 3 is the acrylic lacquer thinner. That's using a 1.5mm tip.

You will find that different paint brands at times have different stock viscosity and may even vary more with the age of the paint specially if purchased on a "tingi" basis.

None the less if you really want to be consistent on your paint viscosity mixture before spraying then I suggest you use a tool like this.

Earlex SG244 Liquid thickness/Viscosity measuring Cup Ford #4

http://www.amazon.com/Earlex-Liquid-thi ... +Ford+%234

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Re: Duco finish procedure?

Unread post #8 by Komobi24 » Thu Jun 06, 2013 10:44 pm

Thanks for the info guys..

FIrst time namin gumamit ng acrylic paint.. so wala kaming alam kaya pinaubaya sa painter lang.. mala-sapot ang lumabas. At least now we know na. Need to buy panukat thing na yan.. hehhehe
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Re: Duco finish procedure?

Unread post #9 by moji » Fri Jun 07, 2013 12:31 am

When you spray and it becomes web like then that means your mixture is lacking thinner. Be careful though, too much thinner makes your paint flat and have no body.
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Re: Duco finish procedure?

Unread post #10 by Komobi24 » Sun Jun 16, 2013 11:39 pm

moji wrote:When you spray and it becomes web like then that means your mixture is lacking thinner. Be careful though, too much thinner makes your paint flat and have no body.


Thanks... noted
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