Per step 21-17, step 1, I had to separate the attach angles. A band saw would be great, but so far I have managed without one. So I used my hack saw, which left a lot of stock to be removed. So I started to try and file it down, but I realized that was going to take a while and would look very good. I recall back in college I was cleaning up the machine shop for some extra money and my supervisor asked me to cut some 1/4" aluminum plate stock into smaller pieces. I recall that I didn't know how to do this so he instructed me to just use the table saw with the carbide tipped blade. It worked great, so I thought maybe I could do the same here. So I just used my square to hold the piece and worked it back and forth getting closer and closer to the blade until I was just shaving a small amount off with each pass until the hole was gone and the surface was smooth. It worked great although a little nerve racking. Now the edge is smooth and square and I was able to clean all the pieces up fairly quickly. Now that I'm a little more confident with cutting aluminum on the table saw, I did the same for the edge cut. I set the fence up so that it was 1" from the blade and used some scrap wood to push the angle piece though. That also worked great. Some minor deburr and cleanup and these parts are ready for final drilling.
Hack saw on the left and post clean up via table saw on right
