[grumpygrady]

lol I use harbor freight or ebay endmills and just go slow and they are all still sharp but I don't use any smaller than 3/8ths right now with 1/2 the largest and finish the corners with a rattail file or a dremal bit lol spell check may or may not be right lol

2 flute for aluminum and 4 for brass or steel in a cummins mini mill but I don't use it as much as you fellows do I am sure , as for cutting oil I use transmission fluid and it work ok anyway no mills are getting gummed up
hope that this helps a little