Step 5 Apply a Clear Primer/Sealer. Apply a thin coat of clear dewaxed shellac to all cabinet surfaces using a natural fiber paintbrush or a disposable foam applicator. Let the shellac dry for an hour; then gently sand away any surface irregularities using 220-grit sandpaper.
These steps may include using paint remover, sanding and filling and sealing. If you've applied a stain or wood filler to the surface, make sure it is absolutely dry before adding the polyurethane. Apply either oil-based or water-based polyurethane with a brush, lambs-wool applicator, or lint-free cloth.
I would do either a coat of wax if you are using chalk paint or a clear coat of satin finish polyurethane after you have finished painting. Kitchen cabinets take a lot .
Paint the boxes. Work from top to bottom, applying the paint across the grain, then tipping it off with the grain. For cabinet interiors, apply the paint with a smooth-surface mini roller, which leaves a slight orange-peel texture. Sand all surfaces with 280-grit paper, then vacuum and clean with tack cloth.
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