I like this sign.

Here's your sign!!!!!

A lot of shops (both commercial and hobbyist) could use that sign.

Truer words have never been spoken! Probably would not hurt if we all had that hanging in our shops as a reminder.

Engage brain before flipping switch!

I have that sign hanging on the door to my shop. I look at it every day before I start working. A student of mine worked in an Air Force fabrication shop. That was their motto. He made me a dozen or so copies of the sign and I gave them out at the local woodworking club. Words to live by .. and to keep all your fingers by .. and to keep from drilling through your hand by .. oh well you get the idea.