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Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
,
পিজিটি(মেডিসিন)
You need to sand it first! Whenever you paint over something that has a clear oil-based finish on it, you have to rough it up so the paint will stick. If it’s a big flat surface, you can use standard 220 grit for the whole thing. If it’s small or has a lot of curves and edges, you’ll want to use a finer grit.
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