🚀 Lego DUPLO SHUTTLE compatible external tank and booster rockets

Intro:

• my kid is a lot into space shuttles and have an original Duplo space shuttle ( https://www.lego.com/en-gb/product/space-shuttle-mission-10944 ) 
• so I created for him attacheable orange external tank with booster rockets (real shuttle model looks like: https://www.coroflot.com/undersky/Space-Shuttle-Boosters-and-Fuel-Tank )
• I tried a lot to imitate the funny look of duplo models + imitate real external tank and booster rockets look (also with using color changes)
  • all is made proportionally equal
  • you can adjust however the lengths of tank and booster rockets - simply by printing more/less intermediate bricks of your choice

Print instructions:

• well there is a lot to print..
• basiclly there is only little support needed, which is easily removed
  • exception: external tank round bottom, which is printed upside down, because of nice round sourface
• if you think, that your kid can throw it on the floor a lot, possibly increase perimeters/infill of critical parts (like top and bottom)

Assembly:

• please note, that duplo connectors are size for quite nice fit with original duplo bricks
  • because originals are very smooth, it fits them very nicely
  • ⚠ BUT joining 2 printed parts together is something else, because of layering of printed models - there is much more friction!
  • so as a result - it is tough actually to join 2 parts together as-is
    • so thats why you need to use some sand paper adjustments or I have found quick and easy way to do it with pliers - simply rubbing the protruding connector parts until the connection fits well
    • I decided to do it this way, so all those parts can still be used with duplo original bricks - otherwise, the connection would be too loose with them