First and second successful cubes from Makibox
Here's how the first 3D prints out of Makibox look like. The bottom layers are slightly warped, but otherwise looks okay. There are slight curling up at the bottom edges because it did not fully stay stuck to the hot bed.
I think the Z-axis calibration can mitigate this issue, because I've seen the nozzle moving a bit too high up from the hot bed as it printed. I'll see what I can do tonight. Meanwhile, keep reading for more photos.