The other day I was getting ready to make The stiles of the doors of my masterpiece cabinet humidor. I grabbed the piece of wood I had been saving to make them and started cutting. When I cut the first piece I laid it on the table and it rocked from end to end. the wood wasn't stable enough and it twisted. I was surprised (and pissed) because it was from the same tree and color and so on. I thought to myself, "Someone needs to invent a tool that can measure tension int wood grain" Fortunately I had another piece from the same tree at home. It worked out perfectly.
This story made me wonder, how many of you have come across a problem like this and thought "Someone should make a tool that does....."
No board stretchers, I want tools that could be invented to solve situations that kicked your butt.