As Mike Phillips suggested somewhere here, it was probably Meguiar's that had the idea to use the 7424 as a car polisher in the first place.
Here's a few pics that document that...
In the below picture is a new, never before used W-6000 6" Dual Action Buffing Pad from the late 90's, these were around back to the 1980's and possibly longer, I don't know it's hard to find anyone alive that remembers that you can talk to.
Note the wording states you can turn any dual action sander into a dual action polisher...
For those that might not know, this is an air powered, DA Sander, commonly used on body shops to sand paint, primer and bondo. ALL body shops have these air powered DUAL ACTION sanders that use a 5/16 spindle to hold a backing plate.
The W-6000 has a 5/16" threaded stud affixed to the plastic backing plate...
Here it is attached...
Here it is hooked up to an air line...
And here I am running the DA Sander/Polisher over the trunk lid of a Honda...
Then sometime in the late 1980's or early 1990's someone discovered that the pad Meguiar's sold for air powered DA Sanders would
fit and work on a Porter Cable DA Sander.
Note when I typed,
fit and
work, that's two things, there are lots of electric DA Sanders, but most won't power a foam pad, only a thin sanding disc.
And there you go... Meguiar's, a company already selling and teaching people in the body shop industry how to finish out swirl-free on fresh paint after first using a rotary buffer introduced the same pad to the enthusiast or consumer world using a tool that the average person can plug into an electrical outlet in their garage.
The average person doesn't own an air compressor large enough to power an air powered DA Sander as a polisher around an entire car. See my article below...
Then somewhere along the line Porter Cable included a copy of the Meguiar's W-6000 DA Pad in the box and called their DA Wood Sander a DA Polisher.
Try to find that little tidbit of paint polishing history on any other detailing discussion forum.
