Tools to be prepared: a knife, fine sandpaper, a small tube of resin glue and a piece of white cotton cloth.

Follow my instructions step by step.

The first step is to clean up the blackened place with a knife.

Be sure to dig out the black part completely with a knife, otherwise it will still affect the appearance. Don't be afraid to dig too much.

Step two, sand the dug hole with sandpaper.

Use fine sandpaper to grind slowly, and make sure the inside is smooth, so as to ensure that the back is stuck more firmly.

Step three, squeeze in a proper amount of resin glue.

Squeeze the resin glue into a flat small hole, the amount must not be too much, just through the hole, which saves the trouble of polishing in the later stage, and then fully wait for air drying.

Fourthly, grinding the top of the air-dried resin adhesive. Note that don't grind other places, just make the resin glue flat with the rest of the desktop.

Step 5, use pure cotton cloth to polish the resin adhesive polished by sandpaper.

The purpose of this step is to polish the resin glue to make it as shiny as other parts without affecting the appearance.

Here it is. If you don't look carefully, you won't find a hole here.