[modeleng] To BA or not to BA, that is the question.

As I get all of my bits and pieces pulled together for my first practical 
machining exercises, I have noticed that all of the nut and bolt sizes on the 
various plans are BA's. As these plans are all quite old they probably predate 
the modern metric taps and dies that are all I have. Is there any reason why I 
should not use the nearest metric equivalent, or should I save up for a set of 
BA ones please? I have just been on Tracy Tools' web site and they have a 0 to 
10 BA set of taps for £18 and the matching set of dies for £20, plus another £5 
for the correct tapping drills, which comes to £43, plus another £8.60 in post 
and packing. I am not overly mean but I can buy an awful lot of metal to 
machine for the total cost of £51.60! This assumes that I will not need any for 
11 and 12 BA, which would be extra.
Thanks in advance,

Tony Wells.

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