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gloss finish

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Forum topic by trz posted 01-16-2013 09:11 PM 748 views 0 times favorited 22 replies Add to Favorites Watch
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trz

65 posts in 1141 days


01-16-2013 09:11 PM

So, I’m finishing up a creamation urn made of birdseye maple and I’ve so far put 3 coats of Minwax semi-gloss and 1 coat of clear gloss and it doesn’t seem to be as glossy as i would like. Will it reatain more gloss with more coats of the clear gloss or is there something else i can do now to top it of with a nice glossy finish.


22 replies so far

View Clint Searl's profile

Clint Searl

1455 posts in 1016 days


#1 posted 01-16-2013 09:17 PM

You shouldn’t have started with semigloss because that’s what it’s always gonna be. The gloss on top will only let the semigloss shine through.

If you want a gloss finish, strip it and use only gloss.

-- Clint Searl....Ya can no more do what ya don't know how than ya can git back from where ya ain't been

View trz's profile

trz

65 posts in 1141 days


#2 posted 01-16-2013 09:41 PM

Clint, can you please give me a different answer cuz that’s not the one I wanted to hear. lol

View Jim Finn's profile

Jim Finn

1677 posts in 1577 days


#3 posted 01-17-2013 01:53 AM

here is another answer you will not like….. Strip it all and sand it with much finer sandpaper and then gloss finish.

-- In God We Trust

View trz's profile

trz

65 posts in 1141 days


#4 posted 01-17-2013 02:01 AM

thanks for nothin’ Jim lol

View oldnovice's profile

oldnovice

3765 posts in 2023 days


#5 posted 01-17-2013 02:05 AM

Get some Novus Plexiglass scratch remover/polish and buff it according to the directions and you will make satin high gloss. It will take a lot of elbow grease but it beats stripping it!

-- "I never met a board I didn't like!"

View Wdwerker's profile

Wdwerker

333 posts in 889 days


#6 posted 01-17-2013 02:07 AM

He isn’t wrong. For a true high gloss sand very fine, use gloss finish and sand between coats. Then let it cure fully and rub out the finish then polish and buff.

-- Fine Custom Woodwork since 1978

View lumberjoe's profile

lumberjoe

2833 posts in 904 days


#7 posted 01-17-2013 02:11 AM

It’s usually a big no-no, but rub on some silicone based car polish when the poly cures. If you look at my crappy coffee table project, that is how it was finished (before I knew any better)

-- www.etsy.com/shop/KandJWoodCrafts

View trz's profile

trz

65 posts in 1141 days


#8 posted 01-17-2013 11:36 AM

I think I’m. Starting to like the semi gloss that’s on it more and more!

View trz's profile

trz

65 posts in 1141 days


#9 posted 01-18-2013 02:27 AM

if i just put a paste wax on top would that help any, or is that a bad idea?

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jumbojack

1182 posts in 1279 days


#10 posted 01-18-2013 02:51 AM

Only slightly. It is not a bad idea, I usually wax everything as a last ‘coat’.

-- Made in America, with American made tools....Shopsmith

View CharlieM1958's profile

CharlieM1958

15698 posts in 2874 days


#11 posted 01-18-2013 04:07 AM

I have to disagree with the majority here. I believe, at least as far as poly is concerned, that gloss level is determined by the final coats. I read somewhere (Bob Flexner, maybe?) that it was perfectly okay to use gloss over base coats of satin, and I have done it a number of times when I was running low on gloss. I can tell you there was no noticeable difference between pieces that were done with all gloss compared to pieces on which I used a combination of satin and gloss.

I think your urn just needs more coats, and possibly a rubbing-out with automotive polish at the end.

-- Charlie M. "Woodworking - patience = firewood"

View Cosmicsniper's profile

Cosmicsniper

2199 posts in 1814 days


#12 posted 01-18-2013 05:17 AM

I’m with Charlie. The lack coat of finish determines the sheen.

-- jay, www.allaboutastro.com

View Clint Searl's profile

Clint Searl

1455 posts in 1016 days


#13 posted 01-20-2013 02:17 AM

A semi-gloss finish differs from gloss in having a flatting agent, usually a finely ground silicate, added to a gloss base to break up the incident light and scatter the reflection. The effect is an absolute loss of reflectance and a “softer” appearance, and NO amount of gloss finish on top can counteract the effect of the embedded flatting agent. To think otherwise is a delusion that defies optical physics.

-- Clint Searl....Ya can no more do what ya don't know how than ya can git back from where ya ain't been

View oldnovice's profile

oldnovice

3765 posts in 2023 days


#14 posted 01-20-2013 04:17 AM

Many times I have started with satin coats before the final coat of gloss as I didn’t have enough of the high gloss for all of the underlying coats … as I can’t afford to have too much of a finish around too long before it becomes useless.

So I will use up a satin before I apply a gloss finish!

-- "I never met a board I didn't like!"

View CharlieM1958's profile

CharlieM1958

15698 posts in 2874 days


#15 posted 01-20-2013 04:30 AM

Clint, you are right about the flattening agents scattering the reflection. But as soon as you put gloss on top, you change the reflective properties of the surface. Surface is the key word here, because the surface is where the reflection is taking place.

Think about it this way: You could paint something flat black. It doesn’t get any flatter than that, right? What will happen if you put a clear gloss over that flat paint? The surface will be shiny.

This is not only my personal experience, but finishing experts Bob Flexner and Michael Dresdner have written about this.

-- Charlie M. "Woodworking - patience = firewood"

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