Highly detailed model, 85 cm. high (true 1:400 scale) designed directly from the original blueprints. The model was built from 52 pieces, most of them 3D printed flat and glued together. Some of the pieces need light thermo-forming to adjust the curvature of the assembly and avoid printing with support. All pieces of the model can be printed in a 20x20 cm. printing bed, but if you have a larger printing bed the model can be scaled up to build a huge and beautiful tower.The prototype was printed in PLA using 0.2 layer height and printing speeds between 20 and 40 mm/s depending on the detail of the particular piece. All pieces print without support. The model is very easy to print and fun to assembly together.