how many thins need to consider before operating a shearing machine ?

This question should be replied by professional people,like manufacturers.first of all,you should think of the metal width.you need to confirm your metal width is within the shearing machine width.secondly,you would consider the metal thickness.this is more important.you can not see directly.you should see the machine specification.then compare with your metal,please confirm your machine never overload.Thirdly,it is time to concern the blade.because some blade can not cut stainless steel.you can find some info from the blade side.Finally,you should pay attention to safety.you should not take any risk.you need to inspect everything and confirm all are in normal.