Rockman-san - Vol. 1 Ch. 10

[MangaDex]

 

[nekaz]

if yer made of the same metal in both parts how tf you gonna crack it like its made of stone

 

[ZetOff]

if yer made of the same metal in both parts how tf you gonna crack it like its made of stone

It's like hitting the flat end of glass with the sharp end of a glass shard. They may be made of the same material, but the pointier end has more concentrated density than the flat end which is more thin in comparison.