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Things you shouldn't do. Especially twice

If you see someone misusing tools, appliances or small children apparently unaware of how stupid they're being, please tell them. And write it up here, at the top where it will be read, in the hope that someone else will learn, too. No need for names (unless, of course, you want to).


Wood drills

There are various sorts of drill bits made especially for wood, because it's soft and easy to cut. If they're used for metal, they'll go blunt very quickly indeed. Wood drills can be flat, in a spade shape. Or they can be a big coarse spiral with a tiny woodscrew thing at the tip. Or they can be cylindrical and short, also with a central pip or screw. Metal drills are simple spirals, and can also be used for wood.


Laser cooler

Don't run the laser with the lid off the cooler and a fan blowing on it. Sure, it will increase the cooling rate. It will also blow dust & muck into the system and it's supposed to be distilled water. BTW, the dead bee was probably there already.