You need a CNC to make a CNC.

[Greeny]

Hi Liam,

I'm just starting a build too, so my advice is based on reading, not experience, but since no one else has replied yet.

I would advise checking out as many build logs as possible to get a feel for what is good/not so good.
There is a goldmine of information on here, from some very experienced builders.
http://www.mycncuk.com/forums/253-DIY-Router-Build-Logs

Some general points i have picked up are:
Prefer ballscrews over leadscrews except for the tightest of budgets.
Ballscrews are not much more, but are far superior in every respect.
Pre machined ballscrews with standard end fixings and bearings can be bought for great prices from china.(even with postage & import duty)
The sets usually come with a ballnut housing for attachment to your axis, although you will probably need to fashion a bracket.
Here's a couple of examples with different end mounts.
https://www.aliexpress.com/store/pro...358547478.html
https://www.aliexpress.com/store/pro...336703841.html
I only show those as examples, you will need to research the best diameter/pitch/length/end fixing for your needs.

Commonly used pulleys and belts to drive ballscrews are htd-5.
Motor mounts can be bought but are usually flimsy. Most seem to make their own.
Again check out some builds for various options

2.2kw water cooled spindles seem to be much preferred over the kress 1050. They are not much more money, but are more powerful & much quieter. General opinion seems to be the kress are less reliable too.

There is a current build of a machine similar to what you are thinking of that you might be interested in.
http://www.mycncuk.com/threads/10658...ue-welcomed%21

Cheers