[Denman]

I feel quite lucky that we do not have this sort of problem here. As we are all 16-18 year olds, and there are only 20 or so of us, therefore , generally there is an air of trust. Its a shame that you have to resot to this sort of thing. It is true that if you start threatening action, they will usually own up, but it will also make them more rebellious and try again and with more determination. Basically, the only way as far as i see is to enforce that all students to log what they use, to get permissions and to sign lots of legal documents. If this doesn't stop, i would suggest reducing that only a trusted few have access to the tools / materials for the build period.