You may have read somewhere that as a grinding machine you have to use the Oreck Orbiter as an intermediate link between the drive plate and the grinding screen. This would mean that this brown cleaning pad would "hold" the grinding screen and thus transfer the energy of the orbiter to the grinding process. The brown pad does NOT stick to the sanding grid and I'm surprised this fatal flaw was overlooked. I just shake my head every 20 seconds when I have to slide the sanding grid back under the brown pad. Do a quick google search and see how many others have had this problem. We bought this dumb machine just to sand floors and it does a terrible job.
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