hey Flem, good to hear that it didnt effect the finish.
i think it would be reversible, i kept all the parts. the oscillating feature is quite an ingenious design when you look at it. but, with the rub collar in place , i did have to shorten the rubber sleeves about 3/8". but everything else was simply removed, and nothing damaged.
i remember now, that the finish was just part of the reason, i had to remove the oscillation to allow for the rub collar to work- as its a stationary rub collar.
i guess one could very easily make a rub collar that comprised an inner and an outer sleeve- with a bearing between the two.
the inner collar would fit on the shaft- up against the washer and shoulder that the rubber sleeve sits up against- and the outer collar would be the size of the sanding sleeve.
you would still have to shorten the rubber sleeve to compensate for the rub collar, but that would be a very quick and easy method.
i just didnt like the idea of a spinning rub collar, as it has the potential to wear into the template- and screw up a good riser, right at the worst time.