What should be the last step of a spray finish?

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Forum topic by ShaneA posted 10-25-2014 07:06 PM 1404 views 1 time favorited 9 replies Add to Favorites Watch
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6956 posts in 2624 days

10-25-2014 07:06 PM

Topic tags/keywords: deft lacquer hvlp spray finish finishing

So…I got myself one of the HF HVLP guns. Spraying Deft gloss lacquer on walnut cabinets. Nothing like trying your first spray project on a full set of cabinets. But, I guess I am unsre of the “last step”. Should the last step be wet sanding, one last light spray coat, waxing? Some other step?

I have been spraying outside, trying to view the finish in natural light from all angles to make sure I have it as even as possible. But I really don’t have any experience with spraying other than rattle cans on small projects.

Any insight would be appreciated, thanks.

9 replies so far

View NoThanks's profile


798 posts in 1555 days

#1 posted 10-25-2014 08:35 PM

I would caution spraying outside, there could be some interaction with the sunlight causing bubbles depending on the heat and conditions. If you haven’t had any problems so far then I wouldn’t worry about it but would keep an eye out for anything happening.
One last (dry) sanding with 220 or 240 before your last coat should be enough, then nothing should be needed after your final coat.
Last coat doesn’t need to be light, should be a good wet coat, as all coats should be.
I’m a heavy sprayer myself (not always good as most people prefer more lighter coats) I spray as heavy as I can without the product running.

-- Because I'm gone, that's why!

View AandCstyle's profile


3075 posts in 2283 days

#2 posted 10-25-2014 08:56 PM

I usually spray a 2-4 mil coat and lightly sand with 400G if needed between coats. I don’t do anything after the last coat on larger projects. However, it depends on the look/feel you are after. The finish can be rubbed out to increase the gloss or dulled if you want to decrease the sheen. Many people will apply a coat of wax to give a very smooth feeling finish especially on small projects like decorative boxes.

I work all the way through my intended finishing schedule on scrap to ensure I will get the results I want before attacking my completed project. HTH

-- Art

View ShaneA's profile


6956 posts in 2624 days

#3 posted 10-25-2014 10:29 PM

Since the cabinets take up so much space, outdoors was my only workable option. The sunlight didn’t seem to impact the lacquer. However, when I was putting on the second coat of pure tung oil, the sun didnt do it any favors. I ended up having to re-sand a few of the pieces that were facing the light. It was a PITA.

Probably would have been a good idea to get a few projects under my belt with the HVLP set up before diving in, but where would the fun be in that?

Thanks for the insight.

View pintodeluxe's profile


5705 posts in 2839 days

#4 posted 10-26-2014 04:43 AM

I like to wet sand the final (second) coat of lacquer with water and 1500 grit soft sponges. It leaves a glass smooth surface, without the mess of wax and steel wool.

If you thin your lacquer 15-20% it will lay down really nice.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View AlaskaGuy's profile


4208 posts in 2335 days

#5 posted 10-26-2014 05:29 AM

Don’t know about the last step but the first I’d do is get a #4 ford cup and match your finishes vorticity to you nozzle size.

Here’s a chart that will help with that.

-- Alaskan's for Global warming!

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1700 posts in 2015 days

#6 posted 10-30-2014 12:13 PM

I’m confused – you said you were spraying deft lacquer, then later make a reference to 2nd coat of “tung oil”. Slow drying “tung oil” varnishes kind of defeat the purpose of spraying. If you want lacquer, I would recommend a pre-cat lacquer – I’ve had very good luck with Sherwin-Williams. One of the nice things about lacquer (and shellac) is each coat “burns in”, melting some of the previous material, creating a contiguous coat – easy to fix screw ups. For the last coat, sand any rough areas or dust nibs with 400 or 600, and shoot a wet coat. Any rough areas or dust nibs in the final surface lightly sand with 600 or 800 and rub out the scratches.

View Earlextech's profile


1162 posts in 2716 days

#7 posted 10-30-2014 01:31 PM

Nothing should be necessary after the final coat. I don’t wax cabinetry but I do wax furniture.

-- Sam Hamory - The project is never finished until its "Finished"!

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5140 posts in 1746 days

#8 posted 10-30-2014 04:37 PM


View ShaneA's profile


6956 posts in 2624 days

#9 posted 10-30-2014 04:51 PM

It was a pure tung oil, not one of the varnish types. I put two coats on the walnut. Waited a couple of weeks and then sprayed the Deft Lacquer. I think I have them at an acceptable place now. So it will be the extra fun steps now…demo and electrical, plumbing. Just the fun stuff.

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