Tips for removing impurities from the injection barrel

- Jul 27, 2019-

Tip 2, oil stains, oil in the barrel can be used to use raw egg shells, add boiling water and detergent, cover, and shake it repeatedly to remove it.

Tip 3, water rust, because the rust that remains for a long time can be cleaned with white vinegar, the rust said to contain iron hydroxide, which is alkaline, just neutralized with acetic acid for removal.