Mounting insect specimens in resin

I do a number of school presentations throughout the year, and am frequently asked if I can bring a few specimens to show the students. I am usually fairly loathe to do so, because of the fragility of most specimens, and the fact that the majority of my specimens are fairly small and therefore not especially exciting. Getting into work today, I saw a couple of resin-encased beetles I have received as gifts and had a brainwave. A quick search for instructions for how to do it revealed a number of tutorials. The one by Dalchem is useful, as is the guide provided by Complete Paints.