help with project - Woodworking Talk - Woodworkers Forum
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post #1 of 8 Old 02-11-2018, 06:34 PM Thread Starter
mike z
 
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help with project

SO instead of paying $1000 to buy a wall display case for my guitar CLICK HERE i just treated myself to on xmas (NOT THE GUITAR IN PICTURE!), i decided to try and build one. As i am painting it piano black i felt pretty good bc i could cover up most mistakes. Man the wonky miter angles i needed to cut were 97.5 and 82.5 degrees and i had a tough time getting them close to tight.

In any event i spoke to the guy as lowes and told him i wanted the glossiest paint he had bc i wanted a piano black finish to match the piano this will be hung over. He sold me sherwin williams 100% acrylic high gloss paint. i sanded the box best i could with my hand sander and put on 4 or 5 coats, sanding in between coats. I saw online that people just keep sanding up to 2000 grit but that sounded painful so i figured i would just lacquer the heck out of it. But i didnt know if i could lacquer over acrylic and the guy at lowes looked like i was speaking chinese to him. so i went to an art supply place and they recommended a gloss heavy acrylic medium to use as a top coat. He told me just to use a brush and put it on. I laid this stuff on and its like a paste , i could not get it spread out too well no matter how much muscle i put into it. I called the guy and told him i could def see brush marks he said dont worry they will disappear when dry. well, as you can see in the photos he was wrong.

so my question is where do i go from? should i sand this w 400 grit or so and try a lacquer spray? or should i sand it 400 - 800- 1500 then compound/wax/ buff it to shine?? im sort of new to this stuff so im pretty lost
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post #2 of 8 Old 02-11-2018, 06:37 PM Thread Starter
mike z
 
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some pics after paint and acrylic medium
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Last edited by funghi2; 02-11-2018 at 06:39 PM.
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post #3 of 8 Old 02-11-2018, 06:40 PM Thread Starter
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it isnt showing up well in the photos but in real life you can CLEARLY see detailed brush strokes
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post #4 of 8 Old 02-11-2018, 09:07 PM
where's my table saw?
 
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You got some bad advice ....

The gel medium was the wrong top coat and brushing it on was another mistake. High gloss black 'piano finishes" are many top coats and buffed out just like the gloss finish on your guitar.

I don't know which will be a better remedy, stripping of the finish you have OR sanding it down enough to eliminate the brush marks. I would trying sanding first, actually wet sanding. It's a lot like painting a car to achieve that smooth, glossy finish. Check out You Tube for the exact process.


The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
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post #5 of 8 Old 02-11-2018, 10:20 PM Thread Starter
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pretty good info. cant seem to find that am100 for sale online, will call them in the am
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post #6 of 8 Old 02-12-2018, 03:50 PM
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Nice looking case. I keep threatening to build one, but haven't gotten to it yet.

Gloss Black Lacquer is one of the hardest finishes to get perfect. Sadly, it doesn't hide flaws, it accentuates them. So, every pore, divot, nook and crannie needs to be filled. Then sanded, then primed, then more sanding until it's smooth as silk, then you can paint, then sand, then paint, then polish.

You might be able to sand what you have level and get an even coat with decent gloss, but I don't think you're going to get gloss like a piano with anything acrylic.
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post #7 of 8 Old 03-09-2018, 12:01 PM Thread Starter
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case finally got done, had to wait weeks for black hinges from china.

still have to paint some of the white pieces black but pretty much done. humidity 25% outside, 45% inside case.
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post #8 of 8 Old 03-09-2018, 12:02 PM Thread Starter
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pictures here
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