firstly thanks guys for all the replies, i posted this more to create discussion more than gather info to make my own.. my heart is still set on a cnc machine and i will be making one soon even with all my troubles.

i just wanted to pick up on this point though martin
Quote Originally Posted by martin54 View Post
Wilfy, like most things there are forums for people who build there own machines much like this one. The quality of the parts is down to a number of things but some produce very good parts, sorry don't know enough to go into a lot more detail.
Don't believe that building your own would be as simple as building a cnc machine but there are certainly a lot of people doing it.
my current feelings towards cnc are that you have to put a lot of effort in towards design and a fair chunk of cost towards parts mainly rails and screws.

from what i saw of the machine i linked.. it sits on 12mm unsupported rails at most, has quite small steppers and uses a nozzle to feed molten plastic on to a heated bed.. they really dont look that complicated tbh. the hardest thing looks like getting the feed speeds right so that your plastic is melted and that it doesnt just fall in a blob due to it staying too hot.