What I've been using on my crosscut saw to remove most of the rust is a grinding wheel I got for 50 cents at a thrift store. It gets the bulk of it off and I plan on using a random orbit sander with some 220 and wet sand it to "polish it". I've done that on some handsaws and they turned out really well. Just find the etch before getting too rough and use some 220 on it initially to get the remaining rust mostly off then use worn 220 to really clean the area from the remaining light rust. Do not use the fresh 220 too much or it will start removing the etch. Ask me how I know....Right, I should have known the handles weren't an indicator after reading this entire thread . I will eventually get around to taking a stone to the saw and finding an etch. Obviously I've got some tools and knowledge to acquire if I'm going to get into this restoration, but it's good to know I have a nice candidate.