(The red rectangle is a label with my name. To be cautious about Internet security I made it illegible for this photo.)
Step 1: My radial arm saw
Step 2: The original switch
The main reason I no longer use the original style switch is that it was no longer available through Sears parts depots just a few years after I purchased my saw. In addition, these switches lasted about six years for me and (at the time) they cost more than twice as much as the Radio Shack pushbutton switch I used to replace the original design. I am now on my 2nd switch from Radio Shack. The first one lasted 26 years for me!