Thanks for the advice. I do have another machine that drops the feed dogs, but my older machine has soooooooo much more room and is in a cabinet so it has a nice flat surface, that I thought I should try to use it for FMQ. It does have a plate that you can screw on top but it is raised up quite a bit and difficult to move fabric over. I was hoping the slider might solve all that, but it sounds like it will just get all chewed up!