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UpgrayeddSmurphy t1_j9pd0uu wrote

It sounds like you're trying to cover an oil base or maybe polyurethane with an acrylic paint? How was the cabinet finished prior?

Just a guess without a pic, but, yes. More sanding, then primer, then paint. Especially if you're covering poly. It can only save headache later to primer now, regardless if the paint can claims it has primer in it. A good primer is going to penetrate better, and will help tannins bleeding through, discoloring the finish. Ever try to paint an old chest white, only to have funny yellow spots bleed thru later? Prolly old oak, and those are tannins bleeding. Primer will help this immensely.

Sanding can be optional tho. Sometimes stuff is super intricate, and sanding can damage design or inlays. You can use a cabinet deglosser for these spots. Then primer.

Prep is always key in good paint adhesion and coverage. Take the time to do it right. Wipe it down with some mineral spirits after sanding to help pick up any loose stuff left, follow the recommended ventilation guidelines for whatever you're using, and wear your PPE.

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tomcass240 OP t1_j9pgp4h wrote

https://ibb.co/wcgrBJw

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UpgrayeddSmurphy t1_j9pk4x1 wrote

That looks like either a gloss, or clear topcoat of polly, probably sprayed onto veneer or MDF. But super small, so easy to hide. You might try sanding that more flat, primer, then a wood bondo/filler. You don't have to go nuts tho, just give the primer something to grab and make the edge easier to bond and bury, sand too much and you can blow thru the veneer.

I would lay it flat on a bench or horses, for work, use a rattle can primer, shook xtr well, test the spray on scrap, and if it spits, use a foam roller to lay it flat. Filler and sand the filler flush n smooth, primer again, then paint. Less is always more. Both filler, and paint.

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