StevenAyres wrote
An idea that hasn't yet been explored in this thread is blade choice for the Mark VII. To use the original system (guard as pictured below, carriage lock aligning the blade to the table slots), you'll definitely prefer to use the original short arbors and 9" blades by Magna. Those blades come available frequently on Ebay and such for not much money, they're of high quality for their time and sharpen up well. I haven't seen any carbides, but having the standard blades sharpened is inexpensive too.
I assume by blade choice you mean a 9" diameter blade. Please explain how the diameter of the blade relates to the length of the arbor. :confused: