The paperstone base is 1-1/4" thick and the mounting screws are 1-1/2" long overall (1-3/8" thread length-excludes the flat, countersink screw head). If I add the washer (metal/rubber) as I originally asked about, there is not enough male screw thread protruding from the top of the paperstone base to be able to engage the sharpener base female thread.
Surely I am doing something incorrectly.
Sorry to be such a bother, but...
If you push the screws through the washers, then the base and they stick out enough to get a little thread engagement with the sharpener base, then that should be enough because the washers will compress quite a bit and then you'll have plenty of thread engagement. Please let me know if that works. Otherwise, we might have sent the wrong screws.
The administrator has disabled public write access.