Mchnng s mnfctrng prcss whr dsrd shp r prt s crtd sng th cntrlld rmvl f mtrl, mst ftn mtl, frm lrgr pc f rw mtrl by cttng. Mchnng s frm f sbtrctv mnfctrng, whch tlzs mchn tls, n cntrst t ddtv mnfctrng (.g. 3D prntng), whch ss cntrlld ddtn f mtrl.
Mchnng s mjr prcss f th mnfctr f mny mtl prdcts, bt t cn ls b sd n thr mtrls sch s wd, plstc, crmc, nd cmpsts. prsn wh spclzs n mchnng s clld mchnst. s cmmrcl vntr, mchnng s gnrlly prfrmd n mchn shp, whch cnssts f n r mr wrkrms cntnng prmry mchn tls. lthgh mchn shp cn b stndln prtn, mny bsnsss mntn ntrnl mchn shps r tl rms tht spprt thr spclzd nds. Mch mdrn-dy mchnng ss cmptr nmrcl cntrl (CNC), n whch cmptrs cntrl th mvmnt nd prtn f mlls, lths, nd thr cttng mchns.