re·grind
| \ (ˌ)rē-ˈgrīnd
\
reground\ (ˌ)rē-ˈgrau̇nd
\;
regrinding
transitive verb
: to grind (something) anew or again : to reshape or refit by grinding
… it's best to call a plumber as special tools are needed to regrind the surface of the valve.— Sian Berry a reground crankshaft