Hardening of steel

[@covai80]

While hardening cast iron outer dia will expand or shrink

[@aryaacharya8734]

Hi brother I am a blacksmith , how to harden Katthi which we can cut the trees

[@sureshkumar-ee6mo]

Nice explanation....

[@s.janakiammamusicparadise6137]

Superb sir.......

[@kajavahini8430]

Super sir very nice thank you very much 😊

[@ENGINEYEARTN]

super anna..

[@sabarijaam7648]

Thankyou brother

[@arunkumarm7662]

Nice sir :-)but daily videos podunga

[@100Engineering]

👍

[@yogyyogy9200]

Weekly 4 videos avdu podunga sir.

[@arulnokia1351]

Nice explaination.

[@Naveenclassic]

Wow

[@balajiplus100]

Thanks ji.well explained.

[@100Engineering]

Thank you bro

[@metallurgy.studies918]

Can't understand 🙄