ClearCoat over acrylic paint - Woodworking Talk - Woodworkers Forum
 
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post #1 of 5 Old 01-14-2020, 04:05 PM Thread Starter
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ClearCoat over acrylic paint

My daughter is painting a door, yeah I know. Anyway, it’s a cheap mdf door with the white hard coat finish that you would get from Home Depot and she is using acrylic paint to paint it. I am wondering what type of clear coat finish to put on it to add protection and shine. Thank you.
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post #2 of 5 Old 01-14-2020, 04:37 PM
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is this an inside or outside door ????
what kind of acrylics ? (name brand, etc.)
some "acrylics" will come off with just touching.
some Bob Ross acrylics are pretty permanent.

Edit: I have a small artistic brain and it does not think like this.
my kudos to the young lady for her ability to see outside of the box.
knowing what paints she used and how the door will be displayed
will determine any kind of protection after it is all done.
(the wrong clear coat over what she used could actually lift her painting
and cause damage past the point of no return).
also an important note: how did she prepare the door before her painting?
as many have found out, the white factory primer coat is not always the best
foundation for additional coatings.

ClearCoat over acrylic paint-jazzies-door.png
.

.

there is no educational alternative to having a front row seat in the School of Hard Knocks.

Last edited by John Smith_inFL; 01-15-2020 at 08:06 AM.
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post #3 of 5 Old 01-15-2020, 07:41 AM
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Beautiful door. She paid attention in art class. Nurture that talent.

Geoff
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post #4 of 5 Old 01-15-2020, 09:38 AM
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I really like the vibrant colors & bold patterns.
When in doubt, experiment. Make a test panel with the same paint she used and test varnishes on it.
The best place to start is to use the same paint chemistry.
Minwax makes a water based acrylic polyurethane that would be my first choice.
I'd be surprised if that didn't work, but if it did not I would try shellac next. It sticks to lots of stuff and lots of finishes stick to it, so it is a useful interface. It is alcohol based and just dries. Since it doesn't go through a chemical cure, on a door it needs to be top coated for durability. In my case it seals oily woods that varnish will not cure on. I apply mineral spirits based polyurethane over it.
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post #5 of 5 Old 01-15-2020, 09:52 AM
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I recommend getting some advice at an art supply. There are specific varnishes made for various art paints but I don't know much beyond that.

Robert
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