verb
BAD : She claimed that the jumper was made from wool.
GOOD : She claimed that the jumper was made of wool.
BAD : Many components are made by plastic.
GOOD : Many components are made of plastic.
BAD : Margarine, which is made by natural ingredients, seems to be more acceptable.
GOOD : Margarine, which is made from natural ingredients, seems to be more acceptable.
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Use made from when the original materials have been completely changed and cannot be recognized: 'Bread is made from flour and water.'
Use made of when the original materials have not been completely changed and you can still see them: 'Their dining table is made of solid oak.'
Use made by when you mention the name of the company or person that has made something (NOT the names of materials): 'This new razor is made by Wilkinson Sword.'