I am reading a woodworking book on making jigs. One thing that I am really interested is making a hold-down with wing-buts, bolts, and door-stops. If I can make a few of these instead of buying ready-made hold-downs from stores, I can save quite some money. But one thing that I don't quite understand in the book is how to secure a wing-nut at the end of a threaded bolt using "preening".
The hold down as shown in the book is like this: - A wooden jig has a threaded-through-nut in it. - An upside-down bolt goes through the threaded-through-nut. - The head of the upside-down bolt holds a rubber door stop. - The end of the upside-down bolt has a wing nut on it. - We are supposed to turn the wing-nut when we want to secure a piece of wood under the wooden jig. This in turn will turn the bolt, and the bolt will go down and the rubber door stop will come in contact with the wood and hold the wood in place.
Obviously, the wing-nut and the bolt will turn independently if they are not secured together, and we want them to turn together, not independently. The book seems to say that it can make them to turn together by "preening" the wing-nut onto the bolt. What does "preening" mean?
What's the other alternative besides "preening"?
Thanks in advance for any info.