How do I know if my bandsaw blade is dull?
Also asked, how do I know if my knife is dull?
The blade feels dull. Gently run your fingertips over the edge of the blade. Sharp knives simply feel sharp, with a blade that has a well-defined, distinct edge. On the other hand, if the blade feels dull or rounded, you're knife will benefit from being sharpened.
Secondly, how tight should my bandsaw blade be?
The blade should deflect no more than 1/4 in. A good place to begin is to tension the blade until the meter reads proper tension for the next wider blade. For example, if you're tensioning a 3/8-in. blade, I would set the scale to 1/2 in.
#7: Using It Dull A dull knife will require more pressure to get through your food. More pressure means a higher chance of slipping and accidentally cutting yourself. More pressure also means that any accidents are likely to be much worse than the small nick you'd get from a sharp knife that's used gently.