AFAQ RAZA BHATTI: Put a Hardened Edge on Mild Steel with Just a Drill Bit. Sort Of

Sunday, December 27, 2020

Put a Hardened Edge on Mild Steel with Just a Drill Bit. Sort Of

Article URL: https://hackaday.com/2020/12/27/put-a-hardened-edge-on-mild-steel-with-just-a-drill-bit-sort-of/

Comments URL: https://news.ycombinator.com/item?id=25555240

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