I was watching some of Soham Harrison's videos and I saw he had a very nice tool for doing tube mounting of stones at the end of this video. It is a little set of polished cups that you just whiz around the top of the mount to burnish it over. Has anyone seen these for sale anywhere? I couldn't find one on the cooksons website, (or any web site for that matter, but i may not have the right search term). I have often thought about making something of that sort but if I can but one off the shelf, all the better.