Just looking at those pads. They look like they use sandpaper. The screw must screw into a clamping plate that has a couple of pins that keep it aligned. Much like a hand sanding pad. Shouldn't be too hard to adapt a set of old pads to do same. But whether the sandpaper will do the job, is another thing. I do have some aggressive stuff that was used on a small belt sander.

I should/will buy another set of rotors. But reluctant to buy from same vendor who screwed me (autopartsway). Old ones with or without resurfacing will get me through winter when most rotor damage occurs and in meantime I can source new ones locally.

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5