A few years back someone gave me an old piece of a bandsaw with the proviso: "It doesn't have a blade. You'll have to get one and install it yourself."
I bought a blade, and read two books on how to tune a bandsaw. I worked an entire afternoon getting it in good shape and immediately set out to saw up some beautiful cherry burl for reel seat inserts. No matter what I did, that bandsaw burned that cherry. My whole shop was filled with smoke. I was choking on the thick cherry smoke. Every piece of cherry was black as the ace of spades when I finished.
Weeks later, a wood worker friend was by the shop. I described my problem and he took one look at the bandsaw and said -- "Well, it would work a lot better if the blade wasn't on upside-down. The teeth should point down, not up." Needless to say, he was right.
Just this afternoon I dropped the razor blade I was using to trim some wraps. Reached for it in a hurry, and sliced the end of my middle finger half off. Wrapping guides is tough with a Band-Aid on your right hand. (Harry Boyd)
Harry Nunley? (Bret Reiter)
You wouldn't even believe the amount of times guys at work (often the same ones) install a chainsaw chain backwards. It really gets you to wondering about people until something like that happens to you! he he (Carl DiNardo)
About 10 or 12 years ago I installed a central vacuum system in my house. The tough part is figuring out where to run your pipe. Drilling holes, fitting was, I thought, the easy part. I spent about 10 minutes trying to bore the first hole in a stud wall. Wasn't getting anywhere, so removed the Forstner bit and sharpened the cutting edges. Tried again, but still wasn't making any progress. Took me a few more minutes to realize I was running the drill in reverse. (Ted Knott)