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作者: 修理小子 , 发表于: 2014-12-27 (3623天前) @ 白沙纱

Gather your materials.

You'll need a 6-inch taping knife, a 10- or 12-inch taping knife, 1 square piece of plywood or a plastic mud pan, drywall compound, drywall tape (paper or fiberglass), and fine-grit sandpaper and a sanding block.

Clean out the crack.

Use your taping knife to scrape the edges of the crack to remove any dust.

Put some compound on the plywood or mud pan.

This makes it easy to load onto the knife.

Apply a light coating of compound to the crack using the 6-inch taping knife.

Make sure that the coating is wet but not thick.

Embed the tape in the compound immediately.

Lay the tape over the compound you just applied and use the knife to push the tape into the compound. If necessary, cut the tape in short lengths to follow the line of a really crooked crack.

If you bought fiberglass tape, you can skip the embedding coat of compound under the tape because it is self-sticking. Otherwise, you do everything the same way.

Warning: Fiberglass tape is thicker than paper tape, which makes it harder to repair invisibly.

Allow to dry and then apply a final coat.

Follow the same procedure as before.

Sand the patch until smooth.

Use a fine-grit paper to smooth out the surface.

Apply touch up paint to the patch in your wall color.

This is why you saved that half a gallon of leftover wall paint.