A neighbor owns a concrete cutting and coring business.
He displays various mementos from unusual jobs, including a concrete-encased I-beam that they cut right through; he said it slows them down and needs more water for cooling.
“ he said it slows them down and needs more water for cooling.”
Rebar and granite rocks/gravel will really slow down the cut speed. Some really hard rock will wear out the blade.
Inside job for sure.