So I recently acquired a couple of new to me planes that need some work. Both I need to check the soles and irons for flatness and the iron needs a serious iron sharpening. I'll clean as best I can as well. Any other suggestions? Best methods for checking flatness on the sole? I do have a 3"x18"x12" very flat granite block in my shop. While I have flattened plane irons and chisels I've never done a plane sole. Some solid advice would be great. I often look to the infonet but there's as much bad advice as good so unless you know a solid site for such advice you're on your own. I created a web page for those planes here. Thanks again for any assistance.