I started a couple of threads on the 'DIY CNC Wood Routers' forum some time ago but now I've started building I realised I should be posting on this forum and Paul (CNCAdmin) suggested I start a new thread.
Those wishing to read the history of the project can look at:
http://www.cnczone.com/forums/showthread.php?t=2849 http://www.cnczone.com/forums/showthread.php?t=2971
To recap: I teach Design Technology in the UK and was responsible for introducing CNC into the school's curriculum some six years ago. We have a small (300mm x 250mm x 90mm) Isel Automation machine which is OK for small items and as an introduction tool for key stage 3 (11-14), but when it comes to GCSE and A level work it is somewhat lacking in the work area department - some of our students think big!
It was apparent we needed something bigger. However, the phrase " I want to spend big sums of money" and the word 'Bursar' do not sit comfortably together and the cash could not be made available to finance a machine outright and by the time the department had saved enough, I would be looking for early retirement. (Don't want to be teaching much past 55, as there are plenty of things I want to do with my time)
The solution is that I will build the machine and finance the major items and the school will have use of it till I retire at which time the machine retires with me to my workshop at home. Bursar's happy - I'm happy.
At this point, it must be said that I would not have contemplated this had it not been for CNCZone where I had lurked for some time before realising that it was possible to think the unthinkable. I will be leaning heavily on you guys over the coming months, particularly when it comes to the electrics.
Below is an unfinished CAD rendering of the proposed design and I will follow this with progress photos. This could be a long journey.
Mike