Build or buy a fairly large cnc router

[zwk]

I would like to be a bit more specific about the diy option:

Since I want to use mostly off-the-shelf parts, are there available plans made for linear rails made by companies like Rexroth, ISel, Zihlmann, or similar companies?
Other than the linear rails, are there other structural ready made parts, like spindle holders for the Kress 800FME? Other parts I would need to buy from someone with a cnc machine capable of cutting metal, right?

Please accept my apologies for the basic questions, but as I said, I'm new to this, and considering that I currently don't have the time to go through the whole diy process, I need to use as many shortcuts (read pre-made parts) as possible, even if it means spending a bit more.

[GEOFFREY]

Hi, welcome to the forum. If you are making wide/tall cabinets, I do not think the Kress is a suitable spindle. G.