1. Assemble 1 x part no. 1 and no. 2 using the outer slit.
assembly
2. Add 3 more parts no. 1.
3. Turn table upside down carefully and add 3 x part no. 2
4. Turn table back up and add part no. 3 one by one starting on the outside by gently and horizontally pushing them down in the slits, without using force and with flat hands!
5. Now add part no. 4 by gently pushing down with flat hands keeping the part horizontal all the time.