Your need for a 57 1/2" blade for the BBS-20 bandsaw has been niggling me. I bought one of these back when I had to fight cavemen to get to the toolshop, early seventies I believe, less than thirty quid. When Burgess replaced the BBS-20 with the BK1, later BK11 and BK111, I had trouble getting hold of the correct blades. The later machines using slightly longer blades.
I have just unwrapped two blades from that period, both are 56 1/2". One , branded Burgess, states that it is for the BBS-20 MK11, BK2 & BK3. The other, branded Starrett, states that it is for BK1, 2 & 3. I can only imagine that BBS-20 MK11 is actually otherwise known as BK1. Ian, TuffSaws, may well have a definite length for these blades, if not then I would be inclinded to set the blade tensioner towards the lower end of its travel and measure with a piece of string. At that point you have the blade length, 'as long as a piece of string'. Just for interest please post the result of your findings.
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