Student 3 axis CNC Free 3D model

This is my first attempt of designing a cheap to fabricate student CNC. I will be trying to make this by myself. The total cost for parts is less then 50 dollars (without motors and electronics), in total the costs would be around 100-120 Euros (=160+ dollars). In the model I didn't include any screws because it would take too much time, but there are all the needed holes for them.

Feedback is welcome!

Regards,

mcluka