We are 
3D printing allows us (among other things) to save weight on Ariane 6. You are our brainy fans, and we’re sure you can find the answer without our help. 
#ArianeGroup #ArianeFacts #Ariane 6pic.twitter.com/GSQ3ErtlxI
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100kg doesn’t seem like a lot compared to the colossal mass of an Ariane 5 at liftoff (750 tonnes), but how heavy is an Ariane 62 compared to its older sister?.
#ArianeGroup #ArianeFacts #Ariane5 #Ariane6pic.twitter.com/PUZQpNyKGJ
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A62: 530 tonnes A5: ~700 tonnes As far as I know.
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