I have a rubber set 200. And it is hollow. I didn't occur to me that it was until it was too late. Actually it says set in rubber. Very thin layer of plastic/rubber? under the epoxy for the knot, it has broken apart quite a bit. I still have enough to epoxy the .5mm disk I cut to go across to seat the knot.
However, now after cutting the stinking little .5mm disk and sanding it round enough to drop smoothly in do you mention filling the entire handle with epoxy....
Thanks, I might try that.
Anybody know how deep the 24mm knots at golden nib have to sit in the handle?