My first go at making a CNC router

[JAZZCNC]

Could you also have a look at my new designs and let me know what you think (smaller bed, lower gantry and less rails)?

It's Ok for general layout and better than last but lots of very important details missing or not thought about.! . . Like. How do you fasten the bearings to the Gantry profile.? . . . Z axis .?? Well no detail there at all.!!

Now given the Short length and to be honest even the Gantry isn't massive wide then suggest you use Ballscrews and save lot of hassle. You'll get much better accuracy and far better reliabilty. Won't cost much more money either.

Personally I'd drop the profile that sits on the bearings and increase the height using taller profile or 2 pieces. Then sit the Gantry profile directly on the bearings fasten to a plate.
I'd also have stiffer gantry. 2 pieces arranged in L config is very stiff. Like this