My first saw was a Craftsman that you had to insert a "U" shaped thingy in the holder, and the arm to hold the blade clamp in place while you put the blade in. Had to use an allen wrench to loosen and tighten the clamp. It was a nightmare. I finally got tired of getting down on my knees to put the blade into the bottom clamp. So, I built a table top to mount the saw on that was hinged. I would lift the table top up so the saw was on it's side while I changed the blades. Some engineer really put his heart and sole into designing the saw clamps!! I worked with it for years when I only used the saw occasionally, but when I really started getting interested in fret work, I had to do an upgrade.
That little Craftsman saw still sits in my daughter's garage on it's little hinged table. Hasn't been used in years.