I had a question about how I bind my books together so I thought that I would demonstrate how I do it. Many schools have a large binding machine (ours does) but it's big and heavy and I wanted to do some over the summer so ............ I bought one at Walmart for under $50 a few years ago and I love it.
This is what it looks like. You can take the handle off for easy storage.
Take the whole thing off the machine and trim the coil if necessary.