It was a PC-type one that was mounted on my GG. The plate`s yellow foam material disintegrated in a somewhat weird way while I was using it with MF bonnet (over a foam pad) to buff off wax. No damage other than contaminating the MF bonnet pretty badly (I just tossed it).
I can imagine what you`re concerned about, but I`ve only had that happen *one* time- the stud started to tear loose; I spotted it and replace the plate with no damage done. That one time was a *LONG* time ago and I can`t remember what plate it was, but if I had to guess I`d say it was a cheapie generic (which I no longer buy).
I`d keep you keep a spare plate on-hand, but if you maintain vigilance, and keep your wits about you whenever polishing, I wouldn`t expect any problems. Though that does have me thinking "yeah, famous last words..."
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