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PostPosted: Thu Feb 12, 2009 4:55 am 
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Joined: Fri Nov 11, 2005 3:32 am
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Location: Ithaca, New York, United States
Thanks for that further input, Brook.

I'm going to answer my own question about the Festool discs, as I've found all the info. The hole arrangement on the Festool 5" ROS pad is different from the standard, so standard 8 hole sanding discs will not work on the Festool, and the holes on the Festool sanding discs will not line up on the standard 5" 8 hole ROS pads found on other sanders.

Exactly the kind of complete info on specific varieties of sandpapers that I've been looking for is available for Festool sanding discs here: http://bobmarinosbesttools.com/tip_deta ... fc2&tid=23

It would be nice if other manufacturers and suppliers of sandpapers would provide such thorough information, rather than just colors and marketing hype with somewhat vague claims about performance. Bravo to Festool. The availability of this info alone is another motivation for me to go ahead and get a Festool ROS. At the same time, with this info from Festool, I am now able to extrapolate a much better understanding of the varieties of sandpapers available from other manufacturers as well.

If you check out that PDF from Festool, you'll see that they make one sanding disc (Titan 2) that is stearate coated, and they specifically warn against using that one with waterborne finishes. Their "Cristal" paper looks like the one to choose where you might use 3M Gold - it is an open coated paper with some kind of no load coating. It doesn't say what the coating is, but I assume it's not stearate, since they specifically mention the stearate coating on the Titan 2 paper, with the warning about not using it with waterborne finishes. They also describe the Cristal paper as being very aggressive. It looks like the one I might choose, for example, for sanding the drum sander scratches off the back of a guitar, especially if the wood is oily/resinous. A good, aggressive, no load paper should make quick work of that job.

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