Thanks for all of you!
Have any of you tried printing ABS to blue masking tape? I'm bit astonished when it just sticks to it, while people using hairspray etc
Now when I've printed couple dozen parts, is time to plan some improvements! First of course I need to make wirings go nicely. I already printed couple parts of cable chain from thingiverse as test, works great! Then I should make the endstops working so I don't need every time calibrate Z-axis. And find aluminium plate so I can make print bed and get it level!
You can also see kind of vibration on latest part surface. It's probably caused by x-axis wobbling, since there is only one belt on one side and weak quality linear bearings which have too much clearance. Need to say that I'm not satisfied with quality of them, but what you can expect from cheap bearings. However this is something what I want to be fixed, even it doesn't matter so much.
I've planned to make new bearing blocks which have couple ball bearings rolling on chrome bar. Maybe that would be a lot robust way to do bearing.
Now I can print those parts first to test how they works!