BIN Primer over existing paint?

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Old 03-08-16, 06:08 PM
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BIN Primer over existing paint?

So as a rookie DIY ten years ago, I had no idea the pine knots would eventually bleed through my light paint coats. I'm addressing this now. I have a can of the BIN shellac primer ready to go. My question is- do I necessarily need to sand off the exisiting paint and primer that's directly over the knots, before painting the BIN shellac on, or can I just skip that and paint directly over it on the spots in question? Hoping I can get away with the latter, even with a light sanding.
thank you!
 
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Old 03-08-16, 06:15 PM
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It's always good to lightly sand between coats. But no, you don't need to sand down to bare wood. Just scuff sand and hit it with primer.
 
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Old 03-09-16, 08:40 AM
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I would lightly sand the knots, primer and then lightly sand the whole surface prior to painting so it's a uniform surface for the paint.
 
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Old 03-10-16, 06:37 AM
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Ok, thanks so much guys, Im good to go now!
 
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Old 03-10-16, 06:45 AM
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Be sure to dust thoroughly after any sanding. BIN sands really nicely, but it really stinks so if you can open a window that's a good idea. Nice thing is the smell dissipates within a fairly short time frame due to it being denatured alcohol based.

Be sure to really, really shake the can of bin before opening and give a good stir after opening. The solids in that stuff really like to settle to the bottom of the can.
 
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Old 03-10-16, 06:53 AM
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Yep, love those tack cloths- can't never have too much on hand.
 
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