It is an old saying to become an expert you need 10000 hours experience. The National Institute of Health has an article about it at: The 10 000-hour rule – PMC (nih.gov) That is based on a 40-hour week. How many hours are in an apprenticeship? Some sheet metal worker apprenticeships are 4 years. If it is like a 7-year apprenticeship in the 19th century you will have completed your 10000 hours in 5-man years and have two more years that you should be paid as a Journeyman. But to make it more confusing in the 19th century you worked from sunup to sundown not just 9-5. So is a Master tinsmith an expert?
Shopping Cart