I probably should de-acclimate myself from the A/C I spent about five hours outside yesterday, mostly early in the morning, but it was still pretty warm and humid even with a 42" shop fan blowing directly at me. My all-metal shop seems to concentrate the heat; I wonder if installing a vent fan in an end wall under the peak of the roof would help?
Get a smaller turbo fan. Like this one
http://www.homedepot.com/Appliances...splay?langId=-1&storeId=10051&catalogId=10053
Place it just outside the building entrance pointing low into the building. This puts fresh outside air in to the building and pushes the hot air outside.
Then use your shop fan inside