If, when mounting a bandsaw blade, the saw teeth are pointing up instead of down, don't panic. Chances are that the saw blade got twisted inside out as it was uncoiled. To remedy, just twist the saw blade right-side out and it will mount correctly. Watch for this, especially when you are mounting a metal-cutting blade which has small teeth. If used upside down it will cut poorly and the teeth can lose their edge quickly.
A rule can be used to quickly divide a board into equal parts. Lay the rule on the board with the start of the scale against one edge. Then angle the opposite end to a number that is easily divided by the number of parts you want. (If you want to divide a board into three equal parts you might use 9 and mark the board at 3 and 6.) Likewise, if you need four equal parts, angle the rule to numbers divisible by four, like 8, 12 or 16.