After a lot of research I have managed to cobble together my first circuit diagram. (ever!)
Most of it is my own work and i'm not sure if it will work yet. I will start building it now and test the separate elements of the circuit as I go.
A special thank you to the following contributors. Without you I wouldn't have been able to get this far:
Bdring: for 2.X drawings which I used as a basis.
Tweakie CNC
http://www.cooperman.talktalk.net/files/27.htm for in depth and patient email support on noob questions.
cvoinecu: for critical ammeter information
I have attached the diagram and will appreciate any comments on it.
General progress update:
My 40W laser tube has arrived in the UK from CNColtech in one piece and in 5 days from ordering! £115
Power supply from lovehappyshopping is here as well. £100
All small components have now arrived and the next challenge is to get it all together.
I am currently designing the PC board for the NOR gate buffer and small voltage regulators. I will use strip board and have found freeware that "simplifies" this task.
http://veecad.com/I have mocked up a front panel to use for testing until I decide on how to clad the machine