Brian- You will love using Purple polish on your blades. I just re apply some Purple whenever the bugs get to thick on my blades. I can go all winter without need for polishing my blades. Too many people get impatient preparing the aluminum. You can just apply Purple to your blades and start power buffing. It will come out shiny, but it won't have the depth and a true mirror finish if you apply lots of elbow grease first. The aluminum needs to be sanded to finer and finer grades, going down to 800 to 1000 grit. In my case, I had 16 root doubler plates that had to be progressively hand sanded to finer and finer grit. Then, getting a wool bonnet random orbit power buffer and applying liberal amounts of Purple. You must make sure you.are only warming the blades , and not getting them hot. Again, you can have shiny blades by not even sanding them,and just getting instant gratification by applying Purple. There is a difference however. You have to really work at the sanding part to really get a deep mirror shine. If anyone wants to see proof in person, I can show them at Mentone where I did not progessive sand my aluminum, and just used Purple only. Both are shiny, but my blades you can tell there is more depth to the mirror shine. Stan