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Old 04-22-2013, 11:34 AM   #1
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Hairline cracks in paint of handmade shelves


Hi!

So the previous owners handmade floating shelves for the wall in the dining room. I recently finished remodeling the room and I am trying to fix up the shelves. There are hairline cracks in the paint that I am not sure how to repair. They must have put on 7,234 layers of paint because I could sand all day long and still not smooth out the cracks!!

Should I fill the cracks in with a wood putty? What is the best way to repair them?

Thank you
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Old 04-22-2013, 02:43 PM   #2
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Hairline cracks in paint of handmade shelves


My first thought is random orbit sander. If there is that much paint on there you may run the risk of the same thing happening again. And if they are not smoothed out almost perfect they will show thru your new paint.
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Old 04-22-2013, 03:25 PM   #3
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Hairline cracks in paint of handmade shelves


That is caused by different levels of paint expanding/contracting at different rates.
I would sand for adhesion ( scuff sand), clean off and put a thick coat of peel stop on them.
Or another approach would be prime with Zin 123 and skim with Elmers wood filler, sand smooth, reprime and finish.
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Old 04-22-2013, 03:40 PM   #4
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Hairline cracks in paint of handmade shelves


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Originally Posted by Brushjockey View Post
That is caused by different levels of paint expanding/contracting at different rates.
I would sand for adhesion ( scuff sand), clean off and put a thick coat of peel stop on them.
Or another approach would be prime with Zin 123 and skim with Elmers wood filler, sand smooth, reprime and finish.
Brush if you do that aren't you still going to have the same problem with the expanding and contraction?
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Old 04-22-2013, 03:55 PM   #5
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Hairline cracks in paint of handmade shelves


Peel bond has flex, and the wood filler also has some flex, as does the acrylic primer. Most waterborne enamels also have some give.
Probably someone painted it with a flat and then went over it with an oil enamel, which has no flex but gets brittle over time.
That is one advantage of the new gen of paints.
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Old 04-22-2013, 05:00 PM   #6
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Hairline cracks in paint of handmade shelves


Thank you very much for the suggestion. Sounds like a good plan.
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