I was afraid of my heating wires detaching because they were getting tangled on the x-stage and from all the movement of my heated build platform, so I made this attachment to relieve some of the stress.
The part is a little thick so that I could file it down to be a snug fit. The mounting features were added in OpenSCAD so you can adjust them if you need to.
See also jabella's clever paperclip solution: http://www.flickr.com/photos/jabella/4609979407/
File/sand part until it fits tightly into slot on x-stage.
Make sure y-stage can travel all the way back and forward and you're good to go.