I have both the Clover and the Bohnin (sp) threaders. They both work well, but you have to make sure to read the directions and have the thread all the way down, and not held too tight so it can be pushed thru by the wire in the little machine. I also have a small wood piece that the Clover sits in and it works better. I bought it at the SD Quilt Show many years ago and someone at the booth made them. Has a grove on the wood and a piece of 2 sided tape holds it in place.