Today I decided to swap out the default blade that came with my metal cutting bandsaw in favour of a bi-metal blade which is a recommended upgrade. Much to my dismay, when I went to install it the direction of the teeth was backwards. How could the vendor do this to me when I bought both at the same time? ARRGH!
A bit of online research later, I found a saw vendor’s note about how you can just flex the things and turn them “inside out” and thus change the direction of the teeth… I am very glad I did the look up before I called the store to announce my ignorance.