I am starting to make my own frames and am curious about using a framing vise. I have a Fletcher 5600 V-Nailer. Does one need to use a vise if they have a V-Nailer? What is preferable? What methods are used if you have a V-Nailer? What about the new United sander? Is that a good investment? I am using a DeWalt miter saw for now that does good 45s. What is the proper method for using the sander? When do you turn it clockwise and when do you turn it counter clockwise? Any advise and thoughts appreciated. Thanks!