Question

Grinding performed before polishing? Justify.​

Answer 1

Answer:

• Grinding and metals is done to get the desired dimension like cutting the metals to get a proper shape or size so that the required structure is attained with the same dimensions that are required while polishing is done to minutely finish the metals such that proper size in shape is attained precisely.
• This process is done to clearly work on the details of the metal that are required and hence is done only after the process of  grinding is finished.