Dick nailed it. I got squeamish BEFORE I saw all slivers and filings. My eyes are hurting. I froze the video and looked it up, you can buy those things for less than $8.50. I like to be creative and make fittings, but I would not risk my hide and my tools and my eyes and my time to save that kind of money.
I showed a friend how to cut an aluminum rail for a stair lift with his chop saw. That aluminum saw dust is EVERYWHERE and will NEVER go away.