Duplo rocket

Rocket inspired by kerbal space program printed with PLA. Assembled toghether fits nicely, compatible with original lego component. For Lego Duplo fans. Tested on Mk4 printer, all dimensions fits nicely, but rather tight. For small kids might be too fit, but it will slightely loose after few mounts and will be ok. 

Tip and control surface print without supports

Engine to be printed upside down with supports on the base only. 

Another bricks can be fitted below the engine (e.g. to create multi-stage rockets).