It is very important to print the different pieces in the provided orientation to prevent undesirable fillings. No glue needed. No additional support is needed. Clean carefully the brim and supporting parts before assembling the model. You can follow the instructions sheet for print and assembly. Take care, this model needs a 3d printer with at least 210 mm. of build volume. This model has been sliced using Cura 4.0 and printed in a Ultimaker 2. Have fun!