You can see a replay of the glazing demo here: http://flash.kmi.open.ac.uk:8080/fm/fmm.php?pwd=444f34-4846&jt=00:33:30.86 It shows three putty products and describes their advantages and dis-advantages. John by hammer and hand great works do stand -- To terminate puerile preservation prattling among pals and the uncoffee-ed, or to change your settings, go to: <http://listserv.icors.org/archives/bullamanka-pinheads.html>