What would YOU do with all this?

[routercnc]

The carraiges are the expensive part and the rail is cheaper so if you can get some compatible rail in a useful length then do that (sorry, some cash required here).
Use the unsupported rail for Z, the three large carraiges for the Y (one on top rail and 2 on the lower rail where the forces are higher). Use the 4 small carraiges on the long X axis that the gantry rides on, with one spare.

Use the profiles for gantry and bed with the plate for gantry sides and any spare plate for a spoil board / work area

Save up for ballscrews plus the rest.

Unfortunately CNC can’t be done cheaply but the above would get a fun starter machine. Make a nice job and maybe get more for it to put towards mk2? Best of luck with it !

[Nealieboyee]

You have broken rule no.1 Firstly, I love your video series on Youtube. Great clean work on MK4 mate! Absolute joy watching you work.

I have absolutely everything I need for my 3'x2' build. Yes it cost money!

These parts are just for something fun and perhaps useful. I'm not buying anymore for it.
Interestingly, I've already put together a build in sketchup using only these parts and a short chunk of aluminium extrusion (120x80mm heavy duty). It sort of looks more like a milling machine than a cnc but still. For lead screws I use regular M8 threaded rod and some acetal as lead nuts. I actually build the xy part of it and it was super sturdy and no backlash that I could see.

I just wanted to see what everyone else would make with these parts.