Dec 13, 2019 #1 Ashwani61 Materials Dec 13, 2019 1 0 0 CA Step down turning or machine the area .Sand it with 60 grit san paper and let it remain in 30% Hydrochloric acid or strong nital. Grain flow lines will clearly show up.
Step down turning or machine the area .Sand it with 60 grit san paper and let it remain in 30% Hydrochloric acid or strong nital. Grain flow lines will clearly show up.