So I am looking to build a CNC machine designed for cutting wood and aluminium. I haven't fully decided but I think I want a cutting area of about 750mm x 500mm. I don't have any access to any milling machines currently and so would like to buy a Z axis kit to make sure it's good. I'm only a real budget because I'm a student and so probably have around £750 to spend over around 6 months so this will be a gradual long term project. I plan to use supported rail and timing belts for cost, if it's worth it I will go with screws. I've been looking around and ebay seems to be the cheapest place to buy this sort of stuff (I need everything) however I think I will put an advert in the wanted section to see if anyone has anything second hand.

I'm an electronic engineer and very skillful with my hands and designing mechanical objects so a challenge is not scary!

Thanks
Boscoe.