My Graber I3 improvements

I decided to modify some of the components of my Graber I3 printer and it is becoming a bigger project. I started building a new heatbed using two aluminum plates, one as the heatbed baseplate. This improved the stability and turned the Z axis calibration a lot more precise. Next I designed a new X-carriage that I'm still working on, but is working nicely, even with minor design flaws. Next step will be new X-ends and cable chains, then I will think about a housing for all together. Please be pa