Just a quick question for you pen gurus out there, When I get to wet sanding a pale/white/see through acrylic pen on the mandrel, the very fine particles that inevitably get sanded off the collets end up between the brass tube & pen body, thus highly visible & very ugly. I am using the glue I got with my pen pack from turners retreat ( at work at the mo & can't remember the name, purple label & expands when drying ), when squaring off the ends I then make extra sure there is no gap by then putting super glue @ the ends of the tubes to try to seal any possible minute gaps between tube & blank, but seepage still gets in there. I'm pretty sure what the answer is, don't sand the bl++dy collets!!!, but I have trouble in avoiding them!. Any help in my little predicament would be greatly appreciated!.