Remove dust and debris and trowel-coating primer.
* The photo uses Alpron H-305.

Let's apply a resin repair material that has been kneaded a little hard with a trowel for intermediate trowel-coating .
* Adhesion will be even better if you "stick" with your finger.
* The photo uses Alpron HM.

Trowel-coating a little more than the finished surface and wait for it to hardening.

Gradually grind with a grinder with a # 36 grindstone .
Shave it so that it is completely flat with the finished surface.

After cleaning, apply a primer and trowel-coating the repair material with a trowel-coating trowel for intermediate trowel-coating .
Use a scraper to scrape off excess repair material repair material it dries.
Rough dents and scratches can be erased in this process.

After the repair material is completely dry
lining material to eliminate boundaries and adjust the texture.
Trowel-coating the primer and trowel-coating the lining material to cover the repaired part. After drying, use # 600 paper to remove excess repair material.

Let's blow the spray material little by little. It is OK if there is no discomfort with the surroundings and the boundary with the base disappears.

Add a pattern that matches the surroundings.
Let's add it little by little while drying.
Work while rubbing with # 600 paper from time to time.

When it looks natural, it's done.