Need help, buy or build to cut steel, stainless steel, titanium etc

[JAZZCNC]

Irvings correct when it comes to milling Titamium and even SS your into a massively differant machine to any router based machine you'll see on here.
To Mill SS or and Ti to any sort of acceptable standard you will need massive flood coolant and machine twice the ridgidty of Jonathans best effort.

Considering you have no experience of building or designing a machine then I strongly suggest you Forget the Idea for cutting this type of material because your on a hiding to nothing. Even if you gave someone like me the Challenge I'd have to sit think long and hard the best way achieve the strength you'd require and I can 100% guarantee it wouldn't be a moving Gantry router based machine.

Much better would be to buy some "Old Iron" Milling machine and retro fit it for Cnc. Still a challenge in it's self for a first timer to CNC but do-able.

If you do still want to go down the DIY build route then compleltely Forget moving Gantry style machine and look to Fixed Gantry machine. Keep the size to an absolute minimum required and build it MASSIVE strong. The larger the machine the hard that is to achive and very quickly becomes expensive has every thing has to scale up to match Ie, Motors, drives, Psu etc. It will need very good flood cooling so you will want it fully enclosed or get your self a good Mac and weelies.!!

It can be done but the machine required will be need to be several times stronger than you'll find around here and it will need someone with good engineering experience to build it accurately. You will also need Machinery to help achieve building it.

Don't think me being Negative here I'm being Honest and realistic with you.!!. . . . . . I could easily Blow smoke up your arse and say "Ye it's easy get on wi it" but I'd be a complete liar because it will be far from it.

Wish you Good luck if you do carry.