The steel parts are dry and i started assembling the carriages:
Gold, silver, and black go together nicely, the parts sometimes not. But after a second look in the manual and use of force everything fits.
Moving the z-carriage up and down during assembly is quite cumbersome, I attached my drill to the threaded rod to turn it and move it easily.
Up next will be the X-axis and testing the electronics, as the motors should arrive soon.