Originally Posted by
Lonnie
noorth:
Are your referencing a Rupe`s 3" pad that is actually closer to being 4" in diameter or 100mm, because I do not see that Rupe`s makes an actual 3" pad. If that is the case, then yes, a 4" pad on a 3" backing plate is, indeed, "too big" as you have described it.
This would also explain what is happening on vertical panels as the edges tend to "fold over" the backing plate more easily on the vertical panels than the horizontal panels as you use more mechanical pressure (arm strength) on the buffer itself to "hold" it up to panel as you move, rather than just letting the buffer itself rest on flat, horizontal panel and moving it with lighter mechanical pressure as you move the buffer in whatever back-and-forth polishing pattern you use.
Even a 3-1/2" (89 mm) diameter pad will "fit" better on a 3" backing plate. I am "guessing" your CarPro pads may be 85mm in diameter, which is about 3-11/32 ", which is "closer" to the 3" as you call them.
My suggestion? Measure both the Rupes and CarPro pads with a ruler or digital /veneer caliper (some call it a micrometer) and get back to us Autopians with your measurement data. That might clear up some of this "misunderstanding" by myself of the term "too big".
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