Has anyone had success with a liquid sander. I need to paint over all of my gumwood trim that has the original poly,shellac (or whatever coating that was used) on it. I have seen the liquid sander in the store and it looks like it would be so much easier than sanding the entire second floor of trim. Does it work? Will the paint adhere to it? Any input greatly appreciated. Need to sell this house and move to be with elderly parents and time is of the essence.