before cleaning
Test the appearance of the workpiece. The surface of the metal cylinder has a black paint finish, and the end of the screw tooth is coated with brown anti-falling glue.
The purpose of this test is to remove the brown anti-falling glue on the surface of the metal cylindrical screw thread with a chemical agent.

After soaking ACHM04-Aplus at the end of the metal cylindrical screw at room temperature (20°C) for 30 minutes, it was found that the brown anti-falling glue had become soft and rotten.
Scrape lightly with a plastic straw and find that the anti-falling glue on the surface can be scraped off. However, the black paint surface also wrinkled due to soaking into the chemical surface.

After soaking the ACHM04-Aplus at the end of the metal cylindrical screw for 5 hours at room temperature (20°C), it was found that the brown anti-falling glue had become soft and rotten.
Can be wiped off with kitchen paper towels. However, the black paint surface is also wiped off together.

in conclusion：

ACHM04-A^plus This brown drop-resistant glue can be removed. But it will also damage the black paint on the surface of the workpiece.
It is recommended to soak the entire workpiece in a 60~80°C chemical and clean it with ultrasonic vibration. After removing the black paint on the surface together with the anti-falling glue, spray the black paint again.