Is that for use with the real stone bases, so they don’t crack?
No it is just because the base thicknesses vary and sometimes the sharpener won’t tighten down all the way without the washers. I recommend not using them unless you need to as I have seen some of the blue aluminum bases strip out when only a thread or two of the screw is all that is holding it down. :sick:
Some of the rock bases come with a standard washer instead of the rubber backed depending on fit – cause on the rock bases the washers can also help with getting the sharpener straight as the way the rock fractures when the drill bit comes out can sometimes cause the screws to want to pull off center
.
